If you’ve ever tried to charge your iPhones/iPads/etc. directly from a small solar panel you probably know it is pretty difficult. Even with direct sunlight, you aren’t likely to be able to charge the device reliably. Most USB-charged devices require a minimum of 5W (5Vx1A) of continuous power to even register a charge. Then a cloud comes or the sun moves and you aren’t charging anymore.

Adding a battery to the mix helps, especially if the battery is big and can charge the device on its own without any sun. But most of the solar/battery combos fall into 2 categories: Either messy because they are a bulky 2 step solution or the solar panel is too small to make a meaningful charge and you are mostly using it like a regular USB battery.


SolarTab is a breath of fresh air here. It is a relatively big 5.5W solar panel built on a thin 13,000mAh battery enclosure that fits in an included Moleskine-esque case. Size-wise, think the original iPad with a nice leather case and a huge solar panel instead of a screen…

expand full story