Super flying combo: includes 4pcs GoolRC 400mAh 3.7V 25C LiPo batteries and 4-in-1 fast smart charger.
Suitable for multi-drones: T37 Mini JJRC H37 Mini RC quadcopter and so on.
Fast charging: charge 4pcs battery at one time, about 40min for fully charge.
Rechargeable: durable and can be charged multiple time.
Indicator led available: led light up indicates charging process, led light off indicates charging complete.
Easy to use: plug the batteries to the charger and then plug the USB charger to the PC.