Coleman Onesource 2 Slot Interchangeable Rechargeable Battery Charger Set

From OMCgear

Part of a system that powers outdoor gear the ColemanA(R) OneSource(TM) 600 Lumens LED Lantern lights the night up to 3 hours (high) or 100 hours (low) on a full charge of the lithium-ion battery (included). For your convenience the battery can be recharged 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 (not included) through a USB port even while powering gear. One system one source power anywhere