If your battery has given its best while playing, it can also take a break afterwards. With this USB charging cable you can quickly get it rolling again. The charger has a USB port. The device itself fits a 3.7 V 600 mAH lithium-ion battery. The unit milliampere hours (mAH) indicates the amount of charge that can flow through the device within one hour. The voltage should always be the same for the charger and battery. If the voltage of the charger is higher than that of the rechargeable battery, it will break very quickly. This charger supplies the battery of your RC model with new power.