Part of a system that powers outdoor gear, the OneSource Rechargeable Lithium-Ion Battery can be used interchangeably in a range of compatible devices, including lanterns, flashlights, wireless speakers, air pumps, tents, and shelters (sold separately). Easily recharge the battery from wall outlets, vehicles, other OneSource batteries, or universal power packs with the included USB cord. Bonus? The OneSource battery helps eliminate the need for multiple power sources by letting you charge external devices, like smartphones or tablets, through a USB port, even while powering gear. One system, one source, power anywhere!