Experience unparalleled power with the impressive 4x21700 battery pack. Boasting a capacity of 5000mAh and 7.2V, this 10Ah powerhouse is designed to fuel your adventures, perfectly suited for MONTEER 8000S/6500S/MJ series lights. With its 5.62.1mm round plug standard, it seamlessly integrates with all MagicShine lights featuring matching round plugs. Enjoy the convenience of traditional A/C wall charging or USB rechargeability. With an IPX6 waterproof rating, it fearlessly withstands any weather conditions. The easily removable battery cable allows for quick replacement with a waterproof silicon seal cap, enhancing its versatility. Get ready for electrifying escapades with this commanding powerhouse!