Charge your devices on-the-go with the Reserve 18,200 mAh Power Bank from Griffin Technology. This 18,200 mAh lithium-ion battery has a durable polycarbonate shell for drop protection, and a two USB Type-A ports with 5 V, 2.4 A and 1 A power output for quickly recharging your devices. Moreover, it has built-in power-management circuits that protect the battery and connected devices from overcharging. Thanks to it's built-in LED power indicators, you can easily check it's remaining charge with the push of a button. When it"s empty, connect it to a PC or wall charger using the included micro-USB cable.