Specification: ??Environmentally friendly ??Battery Type: 18650 Rechargeable Battery ??Voltage: 3.7v ??Capacity: 5800mAh ??Material: Li-ion Battery ??Rechargeable times: Up to 1800 times ??Size: 18mm x 65mm WARNING: ??DO NOT dispose in fire or heat; ??DO NOT mix fresh batteries with used batteries ??DO NOT puncture,damage,and disassemble; Shippment: ??We will try our best to choice a ??nice shipping company to sent the item to you.