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V72 Universal Laptop Battery

This 20,000 mAh / 72 Watt Hour battery will power most laptops, tablets, smartphones and digital cameras. Features two output ports: a hi-Voltage port for laptops and a USB port for phones and iPads. The V72 charges from included AC charger or optional 18 Volt solar panel.

Capacity: More than doubles many laptops' runtime, charges smartphones up to 8 times and tablets up to twice.

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V72 Universal Laptop Battery

Included battery charges efficiently from solar and stores power for use anytime. When not in the sun, it can be charged using the included DC car or AC chargers, making it just as useful on the grid as off.

Capacity: 20,000 mAh, 72 Wh

Output: 5V/2A USB, and 12V/4A, 16V/3.5A, 19V/3A (two output ports)

Input: 14-20 V, 1.2 A

Maximum Output Power: 57 Watts

Weight: 1.23 pounds (558g)

Dimensions: 185 x 125 x 16 mm

Charge Time: In direct sun, V72 battery fully charges in 14.5 hours from 10 Watts and in 9 hours from 16.8 Watts of solar panels. Can also be charged using included DC or AC chargers.

Battery Type: Lithium Polymer

Protection: Short Circuit, Over Charge, Over Discharge, Over Current, Over Temperature

Charge Display: LEDs light sequentially when charging.

Capacity Display: 1 light < 20%, 2 lights < 40%, 3 lights < 60%, 4 lights < 80% full, 5 lights > 95%

The 72 battery and all bags that include the V72 come with an adapter for recharging from an AC power source (100-240VAC).

Included adapters allow you to: Connect to laptops via 10 standard adapters. Charge devices from the USB Port using your own cable or the standard mini and micro USB adapters. Connect to car-powered devices with our car charger socket.

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Useful Tips

Try setting voltage one lower than your laptop charger's output first. If this doesn't properly charge your laptop, then use the higher setting. (e.g. if your charger says 19V, try 16V setting on Voltaic battery first. It can save power if the laptop drops the voltage.)

The smaller and more efficient your laptop, the more runtime our battery will provide. To maximize runtime, change your power management settings to Maximum Battery Life & turn off WiFi.

Some laptops will run from the Voltaic battery with their internal battery removed. You should turn off your laptop before the Voltaic battery is fully drained to avoid crashes.

Remove the cable from your device before changing Voltage between 12, 16 and 19V.

We recommend storing and charging the battery in a cool place.

If you don't see the correct adapter for your device, please use the manufacturer supplied USB cable or please contact us via our Tech Support Form.


Our chargers are designed as universal chargers so this is a partial list of thousands of compatible devices. If you have a question about compatibility with your device or expected charge times, please contact us via our Tech Support Form.


Apple: Pre-June 2012 requires optional reconfigured MagSafe 1 adapter or Apples' Airline adapter connected to our standard car charger socket. Post June-2012 MacBooks require the Apple MagSafe to MagSafe 2 adapter. See more about making the connection here. Dell: Newer Dell Ultrabooks use the optional 4.5x2.8mm adapter and will recharge from Voltaic's battery. Older Dell's may not recharge, but will run off Voltaic's battery. This means you should not run your Dell battery completely flat when planning to use an external battery. HP Business: HP Business Class laptops will require an optional adapter "7.4x5.1x0.6mm HP" here. Others including Acer, ASUS, HP, Lenovo, Samsung Toshiba and VAIO: Using the included adapter set, we've been able to connect to and charge every modern 15" or smaller laptop we've tested. Asus: Eee PC Netbooks (19V setting, requires optional adapter).


Apple: iPhone 1G, 2G, 3G, 3GS, 4G, 4S, 5, iPod Touch, Classic, Nano, Shuffle (using your Apple USB cable or our optional 30-pin adapter) BlackBerry: Bold 9700, Curve 8900, Pearl 8130, Storm 9530, Torch, Tour 9630 - Not compatible with Blackberry 9810 Flip: SlideHD, MinoHD, UltraHD HTC: Eris, Evo, HD2, HD7 Hero, Incredible, Rhyme, Trophy, Thunderbolt Garmin: Oregon, Dakota, and zumo Series, eTrex with nuvi with Garmin's power cable Iridium: 9555 Satellite Phone via Iridium car charger and 12V output LG: Chocolate (requires optional adapter), Incite, Revolution, Rumor Kodak: zi6, zi8 Motorola: Atrix, Backflip, Droid, Droid X, Pro and 2 Nintendo: DS Lite with optional adapter Nokia: N72, N900, N97 Mini, X3, X6 Samsung: Epic, Charge, Galaxy S and X, Instinct, Mythic, Rogue Palm/HP: Pre, Veer Sony: PSP (requires optional 4.0x1.7mm phone adapter) TomTom: XL, XXL and GO Series.


Learn more about expected charge times and battery capacity from our guide to solar charging tablets.

Apple: iPad, iPad 2, new iPad, iPad Mini (via Apple USB cable) Acer: Iconia A500 and A100 (12V setting, via included 3.0x1.0mm adapter) ASUS: Transformer (16V setting, via optional ASUS Transformer adapter) BlackBerry: Playbook LG: T-Mobile G-Slate Motorola: XOOM 32GB (12V setting, requires optional adapter) XOOM 16GB family edition (via XOOM usb cable) Nook: Color (via Nook USB cable - note: charges best when connected to nook overnight in sleep mode) Samsung: Galaxy Tab (requires optional Galaxy Tab adapter) Toshiba: Thrive Tablet (19V setting, adapter supplied with V60). Lots more detail on our Solar Tablet Charger guide.

Digital Cameras

You can charge digital camera batteries using an optional camera cradle matched to the battery in your camera. Connect the cradle to the battery at 12V. Read more about our solar camera charger solution including our list of available cradles.


2 Year warranty on bag/case and panel(s), 1 year warranty on battery. 30 Day Refund for products returned in new condition.