SmartLive 4 pcs 3.7V 18650 5000mah Rechargeable Lithium Battery with 18650 battery Charger Battery type:18650 Rechargeable with charger Voltage:3.7V Capacity:5000mAh Dimensions: 6.5 cmLength x 2 cm Diameter Material: Li-ion Charger Input Voltage: 100V~240V 50/60Hz 150mAh Output: DC 4.2V 600mA