The Pronto has the ability to charge ANY USB device including: iPhones, Android phones, Windows phones, iPads, Android Tablets, GoPros, and the list goes on!

The Pronto has a built-in "smart chip" which allows it to communicate with your devices and charge them at their maximum rate ( up to 2.4A or 12 Watts).

No, There are two steps involved with using universal portable batteries such as the Pronto to charge your iPhone on-the-go. 1) Charge the universal battery 2) charge the iPhone.

1) The Pronto charges up INSANELY fast. In 5 minutes, the Pronto 12 stores enough power to charge an iPhone 5 from 0 - 100%. The Pronto 5 stores enough power to charge an iPhone 5 from 0-100% in around 15 minutes.

2) This step is where you use the Pronto to charge your iPhone. A complete iPhone recharge from the Pronto usually take around 60-90 minutes.

No, power output from the Pronto is disabled while the battery is charging. There are many technical reasons why we think this is prudent. The main reasons are that the design is simplified substantially and the maximum power demands of the wall supply and the internal circuitry are reduced.

Under ideal circumstances the Pronto will charge and discharge over 500 times before cell capacity begins to degrade.

(1) The Pronto 5 can charge using USB or the dedicated wall charger.
(2) The Pronto 12 can only be charged from the dedicated wall charger.

Lithium polymer batteries have internal self discharge that is dependent on environmental conditions. Stored at room temperature the Pronto will hold the majority of its charge for 2 months, after 3 months the Pronto will need to be recharged.

The Pronto 12 comes with a barrel plug to 12V auto/marine (cigarette lighter) converter. You can use most appliances that you use in your car, including inverters, up to 100W of power.

There are two options to take full advantage of the Pronto 12's 12V output:

1) Purchase an AC inverter. This will allow you to have a standard AC wall plug that is compatible with your Laptop's wall adapter or DSLR battery charger. This will also open up the possibility of charging other large devices that have AC wall adapters.

2) Purchase the car adapter for your laptop or DSLR battery charger which will plug into the 12V adapter cable included with the Pronto 12.

There are a bajillion types of solar panels out there. If the panel has a USB out it will work with the Pronto 5. If the panel has a regulated 14V out it will work with the Pronto 12.

Shipping lithium ion batteries is a regulatory challenge. Shipping safety regulations require us to use Priority shipping (USPS). Since this class of shipping service is substantially higher in cost than others, we ask our international backers to help cover some of the cost.

Yes, the power supply provided with the Pronto will work worldwide with the included adapters.

Yes, All of the Pronto battery packs will come with a 365-day warranty!