OneSource Rechargeable Lithium-Ion Battery - 2-PackPart of a system that powers outdoor gear, the OneSource Rechargeable Lithium-Ion Battery, Pack of 2, can be used interchangeably in a range of compatible devices, including lanterns, flashlights, wireless speakers, air pumps, tents, and shelters (each 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 to pack 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! Features:OneSource powers your outdoor gear and devices with one interchangeable rechargeable battery systemPack includes 2 rechargeable 4800 mAh lithium-ion batteriesCharging time: 2 hours with quick-charging station (sold separately) or 2.4 amp USB output; 5 hours with 1 amp USB outputRecharge batteries from any USB port (e.g., wall outlets, vehicles, OneSource charging stations, other OneSource batteries, or universal power banks)Supports USB-charging of external devices while powering gearIncludes a 10 lumens LED flashlight on top for added visibility in low lightLED battery-level indicator3-year limited warrantyWARNING: This product can expose you to chemicals including LITHIUM which is known to the State of California to cause reproductive harm. For more information go to P65Warnings.ca.gov.