The PowerKeep® 12 is a portable, rugged recharging kit that can be taken anywhere. The lightweight and durable kit features four Energizer® NiMH rechargeable AA batteries, a AAA battery adapter, a USB cable and a portable, flexible, 4-panel, fold-out solar power system. With this state-of-the-art portable recharging kit, you can not only easily recharge AA and AAA NiMH rechargeable batteries, but it also supplies the power necessary to charge your favorite mobile electronic devices, no matter how far off the grid your travels take you.