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V39 USB Battery

Out of stock until about May 15th.

10,600mAh / 39 Watt hour external battery for tablets and handheld electronics, the V39 can fully charge an iPad. Features two USB output ports: a hi-power port for fast tablet charging and a low-power port for smartphones. Charges from solar or a USB port.


Capacity: Fully charges an iPad or iPad 2. 10,600 mAh / 39 Watt hours.

Spark Whats Included - Small
V39 Universal USB Battery

Included battery charges efficiently from solar and stores power for use anytime. When not in the sun, it can be charged using the USB Power Cable or optional AC travel charger or DC car charger, making it just as useful on the grid as off. Charge devices from the USB Port using your own cable or the included Micro USB and Mini USB adapters.

Capacity: 10,600 mAh, 39 Wh

Output: 5 V, 1000 mA and 5 V, 2 A

Input: 5-6 V, 2000 mA

Maximum Output Power: 10 Watts

Weight: 9.9 oz (280g)

Dimensions: 4" x 4 ¼" x ¾" (104 x 107 x 19 mm)

Charge Time: In direct sun, fully charges in 10 hours from 8 Watts of solar panels. Can also be charged using any USB port or optional 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 flashing LED 0%, 1 LED <33%, 2 LEDs 33-66%, 3 LEDs 66-95%, 4 LEDs 95%+ full

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Useful Tips

Charge tablets from high-power port, phones and other devices from low-power port. Turn the battery on before charging your device by holding the power button down for a few seconds. Many tablets and most cell phones, iPods, MP3 players charge at 5-5.5V. The power requirement for a particular device is typically indicated in the product literature, on the device itself, or on the charger (as power output).

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: iPad, iPad 2, new iPad, iPad Mini BlackBerry: Playbook LG: T-Mobile G-Slate Samsung: Galaxy Tab (requires optional Galaxy Tab adapter) (will not work with ASUS eee Transformer, Motorola XOOM or Acer Iconia Tab.) Lots more detail on our Solar Tablet Charger guide.


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.


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