Product Review

Features:
﹡ Built-in PCB protection board
﹡ High quality and durable
﹡ This battery has an extra long life for all your battery powered devices.
﹡ High energy density, long life span
﹡ Provides excellent continuous power sources to your device
Battery Specifications:
﹡ Battery Type:18650 battery
﹡ Voltage: 3.7v 
﹡ Capacity:4000mAh
﹡ Material: Li-ion Battery
﹡ Charge Time: about 5~6hours
﹡ Rechargeable Times: about 500~700
﹡ Dimensions: 6.8 cm x 1.8 cm x 1.8 cm
﹡ Weight:0.45g

Charger Specifications:
﹡ High Quality 2 Slots Charger for 18650 Battery
﹡ Input Voltage: 100V~240V 50/60Hz
﹡ Dimensions: 3.34 in x 1.85 in x 1.49 in; Weight: 2.46 oz
﹡ Can try two battery simultaneously.
﹡ Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock.
Package includes:
4x UltraFire4000mah18650 Battery 3.7v
1x 18650 battery charger

Warming Tips:

1.Don't not insert batteries with (+)and (-) reversed
2.Do not disassemble ,dispose in fire ,heat or shot circuit
3.Don not submerge the Battery in water .

Our products have been well tested, examined and packaged before sending off. Any problem please feel free to contact us first so that we can supply the best service for you.