Features:
3.7V 500mAh lipo battery; enough capacity and safe to use.
4 in 1 battery charger saves a lot of charging time.
Over charge for protection for every charging port.
Charging indicator tells the charging status of every pieces.
A good replacement for you to enjoy more flying experience.
Compatible with Wltoys F949 Aircraft Syma X5C X5SW X5SC X5HW X5HC RC quadcopter.