Tips
When you charge the batteries ,we suggest that you should choose balance charger .Thus ,they will avoid over-charging,even swelling up

Feature:
Good product with high quality material
With stable performance, it is practical and durable
Fine workmanship and perfect style
Fashionable design, match with your quadcopter perfectly
It can help your quadcopter fly much higher and quicker, more secure
Easy to install and convenient to use

Specification:
Capacity: 850mAh
Continuous discharge rate: 20C
Voltage: 3.7V
Cells : 1
Weight:21g
Size:50mm*30mm*7mm

Package List:
5pcs*3.7v 850mah 20c lipo battery

Warm tips:
1)When you receive the item,inspect the battery for any damages or swelling .Don't charge a damaged battery or a swelled battery .If you have any issue ,please feel free to contact me.
2) Don't overcharge the batteries.I suggest that you should use the charger with the overcharging protection function.
3) Make sure that the batteries are charged in the safety place.You had better put them into lipo safe bag while charging
4)Don't charge the battery unattended .Never leave while the batteries are in charging process

• Model Number 3.7v 850mah 20c lipo battery
• Product Size(L*W*H): 50*30*7mm/2*1.18*0.275inch
• Suitable for :RC Helicopter,RC car,RC boat.RC Quadcopter
• Plug type:JST
• 4 pcs 3.7v 850mah lipo battery with X4 charger could be fulfilled by amazon.Please view the production ASIN:B014ZVDRXQ

Model Number 3.7v 850mah 20c lipo batteryYihuaxing