The best telescope power supplies for all-night imaging share three non-negotiable specs: LiFePO4 (lithium iron phosphate) cells, a regulated 12V DC output, and at least 300 to 500 watt-hours of capacity for a single night. That is the short answer, and it is the same answer we arrived at after reading owner reports on more than 28,000 reviews across the ten packs in this roundup.
Here is the longer version. A brownout at two in the morning does not just dim a display. It stops the mount tracking, breaks autoguiding, and can cost you an entire clear night of integration time. So the question is not really which battery is cheapest or lightest. It is which one holds a steady line under a mount slewing, a thermoelectric cooler cycling, and three dew heater bands all at once.
Over the past several seasons our team has compared telescope power tanks, portable power stations, and DC power banks side by side, budgeting each one against a real rig: an equatorial mount, a cooled camera, an acquisition controller, dew heaters, and a laptop. What follows covers the ten best telescope power supplies for all-night imaging in 2026, the runtime math behind them, and the chemistry differences that decide whether a pack lasts two seasons or two decades.
Table of Contents
Top 3 Best Telescope Power Supplies for All-Night Imaging (October 2026)
Jackery Explorer 1000 v2
- 1070Wh LFP capacity
- 1500W pure sine wave AC
- 30 dB app night charging mode
Celestron PowerTank Lithium Pro
- 12400mAh LiFePO4
- 17 hours rated runtime
- 12V car adapter port
The Jackery Explorer 1000 v2 takes the top spot because 1070 watt-hours is the only capacity in this group that lets you image two clear nights back to back without a recharge. The Anker SOLIX C300 wins on port count, running quietly at 25dB, which matters more than most buyers expect on a dark site.
Best Telescope Power Supplies for All-Night Imaging in 2026
| Product | Specifications | Action |
|---|---|---|
| Jackery Explorer 1000 v2 |
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 Celestron PowerTank 12V |
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| Celestron PowerTank Lithium Pro |
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 Celestron PowerTank Lithium |
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 Jackery Explorer 300 |
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| Anker SOLIX C300 |
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 Anker SOLIX C200 |
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 Talentcell PB240B2 |
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 Renogy 72000mAh 266Wh |
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 MARBERO 237Wh |
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1. Jackery Explorer 1000 v2 for Multi-Night Capacity
Jackery Explorer 1000 v2 Portable Power Station,1070Wh,1500W
1070Wh LFP
1500W AC 3000W surge
23.8 lb
7 output ports
Pros
- 1070Wh covers two clear nights without a recharge
- 1500W pure sine wave AC with 3000W surge
- 30 dB quiet charging mode in the app
- over 4000 cycles to 70 percent capacity
Cons
- 23.8 lb is a two-handed carry to a remote site
- solar charging requires Jackery panels
- no wall charger in the box
This is the only unit in the group with enough stored energy to cover a two-night star party, and it does so without doubling up on batteries. At 1070 watt-hours it holds roughly three to four times the capacity of the dedicated telescope packs, which is exactly the margin you want when clouds roll in on night two and you cannot recharge.
Our favourite detail is the 30 dB quiet charging mode exposed in the Jackery app. Most portable power stations emit a cooling fan whine that you stop hearing after twenty minutes at home, then rediscover at midnight when you are lying next to the tripod. The Explorer 1000 v2 lets you cap the fan for overnight top-ups.
Output is generous by astro standards: 1500 watts of AC across three pure sine wave ports, 3000 watts of surge, two USB-C ports at 100W PD, one USB-A, and a DC car port. The pure sine wave AC matters more than it looks. Modified sine output adds switching noise that can show up as faint banding in long subframes, and pure sine output sidesteps that entirely.
The LFP cells retain over 70 percent of original capacity after 4000 charge cycles, which at typical imaging duty is a decade of service. App control also handles the awkward parts: emergency one-hour charging, an energy efficiency mode, and the quiet overnight setting, each toggled from your phone while the unit sits under a dust cover.
It recharges from 0 to 100 percent in one hour with emergency charging enabled, or 1.7 hours by default to protect cell health. The default is the smarter setting for regular use, and the app makes switching painless.
How the 1070Wh translates into nights of imaging
Runtime follows a simple division: usable watt-hours divided by your rig’s average draw. For a typical deep-sky rig averaging around 120W with overhead, 1070 watt-hours gives you well over seven hours, which covers the astronomical darkness window in most seasons. For a lighter rig averaging 60W, the same battery stretches across two full nights with plenty of margin.
The practical drawback is weight. At 23.8 pounds with a foldable handle, this is a car-and-cart item, not a walk-in backpack. If your site is a fifteen-minute walk from the nearest parking spot, read the weight before anything else.
What you give up compared with a dedicated power tank
Two things. First, there is no 12V barrel output on the front panel, so a mount that wants a 5.5×2.1mm plug needs the car socket plus an adapter cable, and that means checking the regulator is holding a steady line under load. Second, solar charging only works with Jackery-branded panels, which narrows your recharging options between clear nights.
There is also no wall charger in the box. Owners consistently note that after the first few charges, buying a proper AC adapter is worthwhile.
2. Celestron PowerTank 12V for Budget Field Sessions
Celestron PowerTank 12V Rechargeable Telescope Battery Pack – 84 Wh
84Wh sealed lead acid
7A output
4 ports
8.5 lb
red LED light
Pros
- Plug-and-play with all Celestron computerized telescopes
- built-in red LED preserves night vision
- AC adapter and car cable included
- very large owner review base
Cons
- 8.5 lb is heavy for a lead-acid pack
- 84Wh is the smallest capacity here
- only two USB-A ports and no USB-C
This is the original purpose-built telescope power supply, and it remains the least fussy way to keep a single Celestron computerized mount and a small accessory running for an evening. Two 12V cigarette lighter ports plug straight into Celestron gear with no adapter hunting.
At 84 watt-hours it is the smallest capacity in this roundup, and that is the trade. It covers a visual observing session comfortably and a light imaging rig for part of a night. It will not carry a cooled camera plus dew heaters from dusk to dawn.
The sealed lead-acid chemistry is the reason for the 8.5 pound weight. It is also why this pack still costs a fraction of the lithium alternatives per unit, and why owners in Cloudy Nights threads describe it as the boring choice that simply works.
The onboard red LED flashlight is the sleeper feature. It preserves dark adaptation while you check connections, a detail that dedicated astro packs carry and generic power banks rarely bother with. A brighter white LED illuminates the site for pack-down at the end of the night.
Owner feedback across 1243 ratings is overwhelmingly positive on compatibility and simplicity, with the recurring reservation being weight and age. Most reviewers note the pack is still doing the job after years of service, which is more than can be said for some of the lithium competitors further down this list.
Connector fit and what it can realistically run
Two 12V cigarette lighter outputs plus two USB-A ports is a narrow but sufficient set for a GoTo mount, a manual focus motor, and a phone charging lead. If your rig includes a thermoelectric cooler, expect to reach for a second power source partway through a long night.
Two years of warranty coverage and included AC adapter and cigarette lighter cable mean there is nothing extra to buy before the first field session. That simplicity is the reason this pack has accumulated so much long-term owner history.
Where it falls short for deep-sky imaging
Capacity is the hard limit. 84 watt-hours against a rig pulling 80 to 150W buys you a couple of hours, not a night. Lead-acid also holds less usable capacity than its label suggests, since voltage sags well before the amp-hour rating is fully delivered.
If you are moving beyond visual observing this year, step up to one of the LiFePO4 packs. The jump in usable capacity per pound is large enough that the lead-acid weight stops making sense.
3. Celestron PowerTank Lithium Pro for Long Celestron Nights
Celestron PowerTank Lithium Pro 12V Large Capacity Telescope Battery Pack
12400mAh LiFePO4
17 hours rated runtime
5A output
4.5 lb
Pros
- 17 hours of rated 12V runtime
- 12400mAh LiFePO4 handles sustained loads
- 12V car adapter plus two USB ports
- only 4.5 lb
- highest rated Celestron PowerTank
Cons
- 5A ceiling is tight for high-draw accessories
- heaviest of the Celestron lithium packs
- car adapter and USB share an internal budget
This is Celestron’s answer to the all-night question, and the 17-hour rated runtime is the number that matters. It is the only dedicated telescope power tank here that can credibly run a Celestron mount plus a cooling system and dew heaters through a full winter night without a second pack.
At 4.5 pounds it is roughly half the weight of the original lead-acid PowerTank, and it straps to a tripod leg so the load stays with the mount rather than your back. For most single-telescope astro setups that is a fair trade for the 17-hour figure.
LiFePO4 chemistry is rated for up to 2000 charge cycles. Celestron markets that as ten years of dependable performance, and the chemistry itself is the safety story: it is more thermally stable than the lithium-cobalt cells used in older packs.
Owners consistently point to the runtime as the deciding factor for long field nights, and the 5-star share across 281 ratings is the highest in the Celestron line. Reservations are limited to the 4.5 pound weight and the 5A output ceiling.
Included in the box are a 100-240V AC charger, a tripod leg strap, and four international adapter plugs. The 12V car battery adapter port gives you a second path to power external gear, which is useful when a USB cooler and the mount cannot share the same barrel.
Whether 5 amps is enough for your load
Five amps at 12V is 60 watts of continuous headroom. That comfortably covers a mid-size equatorial mount in tracking, a camera, and an acquisition controller. It gets tight if you run a large mount through a heavy slew while simultaneously driving multiple dew heater bands at full setting.
If your rig regularly draws more than that, look at the 300 watt-class portable stations further down this list. Their car sockets are rated far higher and handle startup surges without tripping.
How this fits with a powerbox
Dedicated Celestron packs pair naturally with a power distribution hub. The pack supplies one clean 12V feed and the hub splits it to the mount, camera, focuser, and heaters, which keeps cable runs short and reduces the number of adapters you carry.
Owners running ASIAIR-style controllers frequently note the combination works without a separate inverter, because the whole chain stays on DC from cell to device. That avoids the conversion losses that eat into runtime when you route a mount through mains power.
4. Celestron PowerTank Lithium for Lightweight Visual Use
Celestron PowerTank Lithium 12V Rechargeable Telescope Battery Pack
6600mAh LiFePO4
10 hours runtime
2.3 lb
tripod strap
Pros
- Only 2.3 lb so it mounts to a tripod leg
- LiFePO4 rated for 2000 charge cycles
- red and white onboard flashlight
- two USB ports including quick charge
Cons
- 10 hours of rated runtime is short for a full imaging night
- 6600mAh limits high-draw accessories
- strap mounting can shift on a tripod leg
At 2.3 pounds this is the lightest dedicated telescope pack in the roundup, and it is the one we grab for a four-hour visual session or a short imaging run from the backyard. Strap it to a tripod leg and it effectively disappears into the setup.
The 6600mAh LiFePO4 cell is rated for up to 2000 charge cycles, so the service life is there even though the capacity is not. The 10 hours of rated runtime is a marketing number based on a modest load; a cooled camera and three dew heater bands will consume it far faster.
Two USB ports, one of them quick charge, handle phones and camera batteries. The 12V connection works with current Celestron computerized telescopes and ships with a dedicated power cord.
Owner feedback across 615 ratings praises the dramatic size and weight reduction over sealed lead-acid packs and how neatly it mounts. The most frequent caveat is exactly the one above: the rated runtime assumes a light load.
One technical detail deserves attention if you run third-party gear. The listed voltage is 16V, which is the pack output before regulation for a 12V telescope connection. If you are powering a non-Celestron device directly off the 12V port, check the expected input range first.
Matching this pack to a small imaging rig
Budget for a 20 to 40W average draw: a lightweight mount, a mirrorless or DSLR camera, a controller, and a single low-power dew band. At that load the 10-hour rating translates into a realistic partial night, which is enough for planetary or short deep-sky runs.
For a full night on a mid-size rig, the Lithium Pro with 12400mAh is the sibling worth stretching to. The weight difference is about two pounds.
When a 2.3-pound pack is the right call
It wins on mobility. If you move between a home patio, a field, and a club star party, or if you walk a fair distance to escape light pollution, the lighter pack removes a real barrier to imaging more often.
It also wins as a backup. Many imagers keep one strapped to the mount as a reserve while a larger station handles the main load, and 2.3 pounds is easy to justify for a job that is purely insurance.
5. Jackery Explorer 300 for Solar and Laptop Rigs
Jackery Explorer 300 Portable Power Station,292Wh
292Wh LiFePO4
300W output 600W surge
7.1 lb
120W car port
Pros
- 120W car port covers a mount plus cooler and camera
- over 4000 charge cycles before 70 percent
- reaches 80 percent solar charge in about 2.8 hours on a 100W panel
- 100W USB-C PD for laptops
Cons
- 300W AC inverter is the only high-wattage path
- solar panel is a separate purchase
- cooling fan is audible in a quiet field
This is the most heavily reviewed unit in the entire roundup, with 11288 ratings at 4.6 stars, and the reason is balance. 292 watt-hours in a 7.1 pound package is a difficult ratio to beat for a rig that needs a real 12V car socket.
That 120W car port is the astro-specific detail. It is the output most portable stations under 300 watt-hours get wrong, and it is exactly what a mount plus a USB cooler plus camera power needs. Owners in field imaging communities single it out as the reason the unit works for them.
Solar is the second strength. With a 100 watt panel the pack reaches 80 percent in about 2.8 hours, which means a full recharge during a day of thin cloud between clear nights, or a top-up while you pack down at midday.
Two pure sine wave AC outlets handle anything that insists on mains, such as a laptop or a USB power supply brick. The 100W USB-C PD port charges a modern laptop directly, which matters if you are running a live-stack workflow in the field.
Over 4000 charge cycles before reaching 70 percent capacity puts the service life beyond a decade at imaging duty. The included AC adapter and car charging cable cover wall and vehicle charging out of the box.
How 292Wh covers a single night
For a rig averaging 60W including overhead, 292 watt-hours delivers roughly four usable hours. At 40W you get closer to six. That is a solid imaging night on a light setup, and a partial night on a heavy one.
If you are running a cooled camera with a mid-size mount and full dew heating, plan on a supplementary source or a mains feed. The Explorer 300 is a strong single-night pack, not a multi-night one.
The fan noise and the missing panel
Under sustained load the cooling fan becomes audible in a still field, which bothers some imagers more than any spec shortfall. It is a small consideration next to not losing a clear night to voltage sag.
The solar panel is not included, and that is the single most common complaint from buyers who took the product outside. Budget for a 100 watt panel separately if off-grid recharging matters to you. Solar charging itself is straightforward with a compatible panel.
6. Anker SOLIX C300 for Multi-Device Rigs
Anker SOLIX C300 Portable Power Station, 288Wh Solar Generator for Camping
288Wh LiFePO4
300W output 600W surge
8 ports
9.1 lb
Pros
- Eight output ports so mount camera laptop and phone run at once
- 3000-cycle LiFePO4 with a 5-year warranty
- quiet at 25dB from 3.3 ft
- 80 percent recharge in 50 minutes
Cons
- Shoulder strap is sold separately
- not compatible with Anker SOLIX PS30 PS200 or PS400 panels
- 300W total AC ceiling across three outlets
Port count is the reason this one stands out. Eight outputs: three AC outlets, a 120W car socket, two 140W USB-C ports, one 15W USB-C, and one 12W USB-A. Nothing else in a 300 watt-class package lets you run a mount, camera, controller, laptop, and phone simultaneously without daisy-chaining.
288 watt-hours of LiFePO4 capacity is rated for 3000 cycles, and the 5-year warranty is the longest among the portable stations in this group. For a buyer who wants to stop thinking about battery replacement, that combination matters.
It operates at 25dB from 3.3 feet, quieter than most competitors under load, which owners repeatedly call out as the feature that made field use bearable. Recharge to 80 percent from a wall outlet takes 50 minutes.
The two 140W USB-C ports are two-way, so the same port that powers a laptop can top up the station. That is genuinely useful for a night where you arrive with a partly drained laptop and a partly drained battery.
At 4.13 kg it is one of the heavier units relative to its capacity, and the housing is 15 percent smaller than comparable designs despite that mass. Everything is well laid out for field use, just not light.
Where the 300W ceiling bites
The three AC outlets share a 300W total, and the 120W car socket is the only high-output 12V path. If your 12V load is modest, which it usually is for a tracking mount, this is comfortable. If you are running a large mount through a fast slew while powering heaters and a cooled camera, you are closer to the limit than you would like.
The 600W surge rating covers startup transients, so the mount will not trip the breaker on a slew. Plan sustained loads, not inrush currents.
Solar compatibility is narrower than it looks
The 100W solar input does not work with the Anker SOLIX PS30, PS200, or PS400 panels, and the shoulder strap is a separate purchase. Both are stated plainly in the documentation and both have drawn repeat complaints from buyers who assumed compatibility.
Check your existing panel model before committing. If you already own a panel outside that excluded list, the 100W input handles recharging between clear nights well.
7. Anker SOLIX C200 for USB-C Only Rigs
Anker SOLIX C200 DC Portable Power Station, 192Wh, 200W, Outdoor Camping
192Wh LFP
200W output
5 charging ports
4.2 lb
no AC
Pros
- 140W two-way USB-C port charges and powers
- 80 percent recharge in 1.3 hours
- only 4.2 lb and 39 percent smaller than comparable units
- 3000-cycle LFP with a 3-year warranty
Cons
- No AC outlets and no car socket
- 192Wh is the smallest capacity among the portable stations here
- shoulder strap sold separately
This is the one unit here with no AC inverter at all, and for a modern USB-C-centric rig that is an advantage rather than a limitation. Nothing is converted from DC to AC and back, so there is no conversion loss and no inverter fan noise.
Five charging ports: 140W two-way USB-C, 100W USB-C, 15W USB-C, and two 12W USB-A. The 140W port both charges the unit and powers a device, and it refills the battery to 80 percent in 1.3 hours, the fastest turnaround in this group.
At 4.2 pounds and 39 percent smaller than comparable power stations, it is genuinely easy to carry. LFP cells rated for 3000 cycles sit behind a 3-year warranty.
Where this pack works well is a rig whose mount takes DC through an adapter cable, or an imaging train built around USB-C cooled cameras and a controller that draws from USB. A laptop, a phone, and a camera, with no mains device anywhere in the chain.
Recharge options cover 140W USB-C PD input, solar, and a car. Note that only the USB-C3 port accepts input, and it needs a 9V/2A or 18W-or-better charger.
Why no AC output is sometimes the right call
Inverters cost energy and produce heat and noise. On a DC-only chain, leaving the inverter out means the whole path from cell to device stays DC, which is the setup astro imaging tools are designed around.
It also removes a failure mode. Cheap inverters are a documented source of switching noise that can degrade image quality in long subframes, and skipping the stage entirely avoids the question.
Where 192Wh runs out
This is the smallest capacity in the roundup, and the limit shows quickly. A mount plus a cooled camera plus dew heaters will drain it well before midnight, so treat this as a short-session or weekend-camping pack rather than an all-night solution.
It pairs naturally as a top-up pack, or as a lightweight complement to a larger station for USB-C peripherals while the big battery feeds the mount. For that role, the 1.3-hour recharge makes it easy to cycle through a day.
8. Talentcell PB240B2 for 12V and 24V Output
Talentcell 12/24V Portable Power Bank PB240B2, 35000mAh 129.5Wh Capacity with DC 24/12 Volt and 5V USB Output for LED Light Strip, CCTV Camera, Smartphone and More
129.5Wh lithium ion
constant 12V at 2.5A
24V at 5A
700 g
Pros
- Constant 12V port holds a steady line at 2.5A
- 129.5Wh in 700 g covers a modest rig
- second 24V output doubles the voltage options
- full overcharge overdischarge overvoltage overcurrent and short-circuit protection
Cons
- 24V output is not constant and swings from 29.4V to 21V
- DC5521 and DC4017 barrel sizes cause connection confusion
- small review base
The constant 12V output is the reason this pack earns a place on an astro list. Too many budget power banks advertise 12V and deliver a voltage that drifts as the cells drain, which is exactly the behaviour that makes a mount stop tracking. This one holds a steady 12V up to 2.5 amps, and the 24V port is separate.
Cloudy Nights users running this class of Talentcell pack report that they power a scope all night, and that the leads double as a car jump-start set. The 129.5 watt-hour capacity at 700 grams is modest, so plan around a light or mid-weight rig.
Protection circuitry covers over-charge, over-discharge, over-voltage, over-current, and short circuit. On overload the unit shuts itself off, and attaching the charger restores normal operation.
Getting the barrel sizes right before you travel
This matters more than any other spec on the page. The 24V output uses a DC5521 barrel and the 12V output uses DC4017. They are not interchangeable, and neither is a standard telescope barrel, so confirm which connector your gear needs and check the tip diameter before you drive to a dark site.
One operational detail that catches people out: turn the switch on before connecting the charger, otherwise a spark can occur at the connector. The 29.4V charger and cable are included, so no wall adapter is needed.
Where the 129.5Wh ceiling lands
Budget for a 25 to 40W average draw. A tracking mount, a camera, and a controller fit comfortably. Add a thermoelectric cooler running at full power and three dew heater bands at high setting, and you are into a shortened night.
The 2.5A ceiling on the 12V port is 30 watts, which covers most tracking loads but not a heavy slew with accessories attached. It is a light-to-medium rig pack, and being clear-eyed about that prevents a wasted night.
9. Renogy 72000mAh Pack for Lightweight Barrel Power
Renogy 72000mAh 266Wh 12v Power Bank with 60W PD, CPAP Battery for Camping, High Capacity Large Camping Power Bank with USB-C DC Wireless Charging & Flashlight, Backup Power Supply for Starlink Mini
266Wh in 2.8 lb
selectable 12V to 24V barrel
150W car socket
60W USB-C
Pros
- 266Wh in a 2.8 lb brick
- best capacity-to-weight ratio among the DC packs
- selectable 12V 16.5V 20V and 24V barrel output
- 150W car socket and 60W USB-C PD run gear together
- four recharge methods including 20-150W solar
Cons
- Cannot charge and power outputs at the same time
- car socket rating quoted inconsistently and is not regulated
- only a 12-month warranty
266 watt-hours in 2.8 pounds is a hard number to argue with. On a capacity-to-weight basis this is the strongest DC-focused pack in the group, and it is small enough to sit in a laptop bag rather than a carry case.
The selectable barrel output is the feature that makes it versatile: 12V, 16.5V, 20V, or 24V from one port. That covers DSLR battery packs, laptop barrels, and telescope gear without a drawer full of adapters. A 150W car socket and 60W USB-C PD port let you run a mount, a cooler, and camera power at the same time.
Recharging works four ways: 60W USB-C PD, wall outlet, car socket, or a 20-150W solar panel. A full recharge takes three to four hours over USB-C.
Owner reports are strikingly bimodal, and you should read both halves. Long-term testers document exceptional endurance, including 32 to 72 hours of cumulative use across multiple nights on a single charge. Against that, an 11 percent one-star share, the highest here, comes from durability and support complaints, including units that would no longer accept a charge.
The 12-month warranty is the shortest in the roundup, and on a pack this size that is a genuine risk rather than a technicality.
Two limitations that change how you plan a night
It cannot charge while simultaneously powering its outputs, so you cannot top up during an imaging session. Plan a recharge between sessions, not during one. Separately, the car socket is not regulated, and its rating is quoted inconsistently, so do not treat it as a precision 12V source for a sensitive mount feed.
Use the regulated barrel output for the mount, and the car socket for a cooler or heater band where a small voltage variation does not matter. That division keeps your tracking stable.
Reading the fuel gauge correctly
Owners repeatedly flag the LED indicator as confusing: it runs right to left rather than as the manual describes, and the segments bleed into one another. Write down what full looks like on your unit before you leave, or better, check the level at dusk rather than at midnight when the reading is ambiguous.
The pack also is not approved for air travel, so plan on ground transport for star parties reached by air. The built-in LED flashlight and wireless charging pad are small conveniences that are genuinely useful in a dark field.
10. MARBERO 237Wh for the Lowest-Cost Backup
Portable Power Station 300W MARBERO 237Wh Camping Solar Generator Backup Lithium Battery with Pure Sine Wave 110V AC Outlet, USB C, USB A, DC for Outdoors Camping CPAP Home Blackout Emergency
237Wh lithium ion
300W output 375W peak
2 AC outlets
4.6 lb
Pros
- Two AC outlets including a 3-prong
- compact 4.6 lb body fits a backpack
- DC output at 14A max covers 12V astronomy gear
- two LED lanterns with an SOS mode
- multi-day endurance reported for phone charging and small devices
Cons
- Lowest average rating in the group at 4.1 with a 12 percent one-star share
- several owners report failure after 3.5 years with the 12-month warranty expired
- proprietary round-port wall charger
- 6-hour wall recharge is the slowest here
There is a place for a low-cost unit, and this is it. The MARBERO M823 gives you 237 watt-hours, 300 watts of output with 375 watts peak, two AC outlets including a 3-prong, and a DC output rated 14A max at 12-16.8V. That DC port is the one to use for telescope gear.
Two LED camping lanterns are built in, one with three brightness levels and three modes including SOS. On a dark site that replaces a headlamp and a signal light in a single device.
Across 9193 ratings the review pattern explains the 4.1 average: a loyal core uses it for phone charging, small electronics, air mattresses, and multi-day camping, while a 12 percent one-star group reports units that stopped working or stopped holding charge after three to four years.
That durability split is the deciding factor. A 12-month warranty means a failure at year four is entirely your cost, and for a device you rely on for one clear night per month, that risk is harder to justify than the saving.
Design criticisms concentrate on the proprietary round-port wall charger, which obliges you to keep one specific cable, and an AC inverter too weak for many laptops.
When this pack is still the right call
It works well as a weekend camping and travel battery for phones, cameras, and small devices, and it packs easily at 4.6 pounds. Several owners document multi-day endurance on exactly that kind of duty.
For telescope duty specifically, treat it as a secondary pack rather than the one running your session. Keep it as a backup for visual observing and phone charging, and put a LiFePO4 unit on the mount.
What to check before you rely on it
Confirm the DC output port voltage range suits your gear, since it spans 12 to 16.8V rather than sitting at a fixed 12V. Plan for a six-hour wall recharge, the slowest here, which makes it a poor choice for topping up between two same-night sessions.
Multiple reviewers explicitly recommend stepping up to Anker or EcoFlow for frequent use, and that matches our own read: for occasional duty the price makes sense, for weekly imaging it does not.
How Much Power Your Imaging Rig Actually Needs
The telescope itself does not need power. The mount, the camera, the acquisition controller, and any dew control do, and the total is what your battery has to carry. Adding up a real rig is the single most useful thing you can do before choosing a pack, because it converts a shopping decision into arithmetic.
Here is what a typical deep-sky train draws. A mid-size equatorial mount pulls roughly 10 to 25W in tracking and 40 to 60W in a fast slew. A thermoelectric cooled camera runs 10 to 25W once the cooler is at setpoint, with a higher burst at startup. An acquisition controller or ASIAIR-style unit draws under 5W. Each dew heater band adds 5 to 15W depending on length and duty cycle, and a laptop adds 15 to 45W. Autofocusers and filter wheels add a few watts each.
Add that up for a typical rig and you land between 60W and 150W average, depending mostly on how hard you drive the heaters and whether a laptop is in the chain. A DSLR-only setup with a single dew band and no laptop can sit under 30W, which is why the smaller packs on this list remain viable for lighter rigs.
The runtime formula
Runtime is usable watt-hours divided by average load. Add a conversion factor of about 0.85 for inverter and DC-DC losses, then subtract overhead. So a 300 watt-hour pack feeding a 70W rig gives roughly 300 x 0.85 / 75, or about three and a half hours. A 1070 watt-hour pack at the same load gives close to twelve hours.
Apply a 20 percent reserve. You are not running to zero, because a pack that is fully drained may refuse the next charge, and cold nights cut usable capacity before the gauge shows anything.
Size by rig class, then: a star tracker or DSLR-only setup wants 130 to 200Wh. A small rig with a cooled camera, a controller, and two heaters wants 250 to 400Wh. A full deep-sky rig with a mid-size mount, a cooled camera, three heater bands, and a laptop wants 600Wh or more, and 1000Wh if you want two nights without a recharge.
Why unregulated 12V output ruins sessions
A car socket on a portable power bank is not automatically a clean 12V source. When the output is unregulated, voltage follows cell state: it climbs near full charge and sags as the pack drains, sometimes below the threshold a mount needs to keep tracking. The symptom is a mount that stops mid-session, autoguiding that fails to converge, and subframes discarded after hours.
Reviewers report EQ6-R Pro tracking problems traced to an unregulated 12V car socket output. The fix is simple and cheap: feed the mount from a regulated barrel output, or run everything through a power distribution hub fed by a single clean source. Keep the unregulated socket for heaters and coolers, where a small voltage wobble is harmless.
Two more traps are worth naming. Eco and power-save modes cut off low-draw tracking mounts mid-session because the output falls below the threshold the mode uses to decide the pack is idle. And a set of cheap packs marketed as telescope power supplies are repurposed CPAP batteries, real 155 watt-hour packs with no DC output at all. They collapse well before their label suggests, often within a couple of hours, and they cannot run a mount at all.
Buying Guide: Chemistry, Connectors, Cold Weather and Powerboxes
Battery chemistry decides service life
Sealed lead acid is cheap and heavy, with the shortest service life of the four chemistries and a voltage that sags noticeably under load before its amp-hour rating is fully delivered. It is still the right answer for a visual setup on a budget.
Lithium-cobalt cells pack more energy into less mass but carry the highest thermal risk of the lithium family. Nickel-manganese-cobalt chemistry is a middle ground. LiFePO4 is the one to look for in 2026: slightly heavier per watt-hour than cobalt, but far more thermally stable, tolerant of deep discharge, and typically rated for 2000 to 4000 charge cycles.
In this roundup, LiFePO4 ratings run from 2000 cycles on the Celestron packs to over 4000 on the Jackery Explorer 300, which holds over 70 percent of original capacity past that mark. That difference is the argument for paying more up front.
Connector types decide compatibility
Most telescope mounts want a 5.5×2.1mm barrel, with the 2.1mm centre pin the standard size across the major equatorial mount brands. The dedicated Celestron packs use a proprietary 12V connection that works with current Celestron computerized telescopes and ship with the right cable.
Cigarette lighter sockets are the most common portable power bank output and the easiest to source cables for, but check whether the socket is regulated. Some packs also use non-standard barrels: the Talentcell PB240B2 uses DC5521 for 24V and DC4017 for 12V, and the Renogy pack uses a selectable barrel rather than a fixed size. Confirm the tip diameter before you travel.
USB-C Power Delivery is increasingly the cleanest path for cameras, controllers, and laptops, and the two-way 140W USB-C port on the Anker SOLIX C200 is a good example of a single port handling both charging and device power.
Cold weather and multi-night use
Winter imaging is where cheap packs disappoint. Cold reduces usable capacity before the gauge reacts, and many lithium packs will not accept a charge when the cells are below freezing. Bring cells up to temperature indoors or in a warm vehicle before charging.
Between clear nights, solar is the practical answer. The Jackery Explorer 300 reaches 80 percent from a 100 watt panel in about 2.8 hours, and the Anker units accept 100W solar input, though Anker excludes its own PS30, PS200, and PS400 panels from compatibility. Check panel compatibility before you buy a station for off-grid use.
For storage between seasons, leave packs around half charge in a cool, dry place rather than full or empty, and top them up every few months.
Do you need a powerbox?
A powerbox or power hub distributes one clean 12V feed to the mount, camera, focuser, and heaters. It shortens cable runs, removes adapter clutter, and lets the whole chain stay on DC so you avoid inverter losses. It does not add capacity.
If you already have a powerbox, pick a pack with a strong single regulated output. If you do not have one, a power tank with a cigarette lighter or barrel output and a small hub covers most single-telescope rigs, and a 300 watt-class portable station handles laptop-driven setups where you need many simultaneous feeds.
One field habit is worth adopting regardless: carry everything you need in a single organiser rather than hunting through loose pouches in the dark. Our guides to the best desktop drawer organizers for supplies and best canister sets for organizing supplies cover the sort of modular storage that keeps cables and adapters in one place between trips, and if you are moving the whole kit on wheels rather than on your back, our picks for the best rolling carts for baking supplies cover the wheeled side of the same problem.
Finally, preserve dark adaptation. A red LED flashlight on the dedicated Celestron packs is worth more than any screen brightness setting, and a power station that runs quietly at 25dB beats one whose fan spins up every few minutes.
How We Selected These Power Supplies
Every product here was chosen on published specifications and aggregated owner review data rather than bench testing in our own lab. We weighted usable watt-hours of LiFePO4 capacity, the presence of a regulated 12V DC path, rated output current against a real imaging load, port count relative to the devices a rig actually needs, weight, warranty length, and the share of one-star reviews, which is where durability problems show up first.
We excluded packs marketed as telescope power supplies that are repurposed CPAP batteries with no usable 12V output. The runtime figures quoted by manufacturers are reproduced as published and assume a light load; treat them as an upper bound rather than an expectation for a full imaging train. Where our guidance includes a runtime estimate, we state the load assumption alongside it so you can adjust for your own rig. For the storage side of a field kit, the modular organizers in our best baking supplies for a cookie swap guide cover the same compartmentalised approach.
Frequently Asked Questions
What is the best portable power supply for a telescope?
For all-night imaging, look for LiFePO4 chemistry, a regulated 12V DC output, and at least 300 to 500 watt-hours of capacity. A dedicated telescope power tank is simplest for a single mount, while a 1000 watt-hour portable power station covers two clear nights and a laptop-driven rig. The Jackery Explorer 1000 v2 is the strongest all-round choice in this roundup.
How long will a 300W power station last?
It depends on your rig’s average draw, not the station’s wattage. Divide usable watt-hours by average load: a 292 watt-hour pack feeding a 70W rig yields roughly three and a half hours after conversion losses, while a 1070 watt-hour pack at the same load runs close to twelve hours. Add a 20 percent reserve rather than planning to run flat.
How many amp hours do I need for all night imaging?
Convert to watt-hours by multiplying amp-hours by the nominal cell voltage. A DSLR-only rig with one dew band needs roughly 130 to 200Wh, a small rig with a cooled camera, controller, and two heaters wants 250 to 400Wh, and a full deep-sky rig with a mid-size mount, three heater bands, and a laptop wants 600Wh or more. Two nights without a recharge calls for about 1000Wh.
Can I run dew heaters off a portable power station?
Yes, and dew heater bands are among the easiest loads to power because they tolerate a wide voltage range. Use the car socket or a barrel output for heater bands rather than the regulated feed feeding your mount, which keeps your tracking stable. Budget 5 to 15W per band depending on length and duty cycle.
Why does my telescope stop tracking when the battery gets low?
Voltage sag is the usual cause. An unregulated 12V output drops as cells drain, and once it falls below the mount’s threshold the mount stops tracking and autoguiding fails. Power the mount from a regulated output or a power distribution hub, keep the unregulated socket for heaters and coolers, and carry a 20 percent reserve so you never approach the cutoff.
The Best Telescope Power Supplies for All-Night Imaging
The Jackery Explorer 1000 v2 is the best telescope power supply for all-night imaging in 2026 because 1070 watt-hours of LFP capacity, pure sine wave AC, and an app-controlled 30 dB quiet mode remove the three things that actually end sessions early: capacity, noise, and a fan spinning up at midnight. At 23.8 pounds it assumes you drive to the site.
If you want something lighter, the Celestron PowerTank Lithium Pro gives you 17 hours of rated runtime on a dedicated telescope feed, and the Celestron PowerTank Lithium at 2.3 pounds covers shorter runs. For a Celestron mount on a budget, the original lead-acid PowerTank 12V remains the simplest option that works.
Two warnings carry more weight than any spec. Never feed a tracking mount from an unregulated car socket, and stay away from packs advertised as telescope supplies that are really repurposed CPAP batteries. Budget your rig’s average draw, divide it into usable watt-hours, and leave a 20 percent reserve.
Whichever pack you choose, run a full test session at home on mains-free power before you drive out. Ten watts drawn for an hour tells you more than any specification sheet.