NEW 2pcs Protected UltraFire 18650 2500mAh 3.7V Rechargeable Li-ion Batteries with Re/Discharging Protection+ Wall Charger Battery Type: 18650 Rechargeable Battery with Re/Discharging Protection Battery Voltage: 3.7v; Capacity: 2500mAh, Max Capacity:2600mAh. Weight:46g/pc Material: Li-ion Battery Rechargeable times: Up to 1800 times battery Size: 68.5mm x 18.5mm Charger size:105mmx62mmx44mm Use the Smart Wall Charger, the batteries charging time is 9-10hrs.