4pcs GoolRC 3.7V 500mah 25C Li-po Battery with 4 in 1 USB Battery Charger for GoolRC T37 JJR/C H37 Drone Quadcopter

Features:
3.7V 500mAh lipo battery; enough capacity and safe to use.
Easy to plug in and take out.
High quality and portable to carry.
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.
Compatible with GoolRC T37 JJR/C H37 RC quadcopter.