Take it Charge it Fuel Up. The FUEL+ 6000 mAh model features a portable design with two USB charging ports offering the option to simultaneously charge two devices like tablets smartphones and MP3 players. One charge port provides industry leading 2.5A of power for fastest charging vs. other brands. Engineered and built to leading laptop battery standards FUEL+ rechargeable batteries are engineered tested and built using the same high quality components used in major name brand laptop batteries. To safeguard against under-discharge over-charge and short-circuit FUEL+ comes with built-in protection to ensure efficient and safe charging cycles. The FUEL+ also features power pass through technology that enables the battery to be charged when plugged in to a USB or wall outlet while charging devices. 6000mAh Lithium Polymer battery with 2.5A output for fast charging power to handle iPod iPhone iPad Smartphones Large / Small Tablets and other mobile devices