Kinfire Waterproof 8.4V "8800mAh" Rechargeable 2-in-Series 4-in-Parallel Li-ion 8-18650 Battery Pack
Power supply for bicycle light or headlamp 2-in-Series 4-in-Parallel Charging time: 5~6 hours; Universal for Cree XM-L T6 / L2 / U2 / Z7 / R5 bulb headlight or bicycle light; Provide high mode light 4.5~5 hours for 3 x CREE XM-L T6 and high mode light 8 hours for single CREE XM-L T6 or SSC Z7 bulb