600mAh 3.7V  14500 Li-ion Battery is a good quality rechargeable battery. This Battery can be the best Replacement to the normal Non-Rechargeable AA Battery used in many applications such as in RC Transmitter/ Receiver Remote, which can make your flight driving experience very cost-effective and efficient in terms of power output than that of conventional AA batteries. These Batteries are widely used in Torch, GPS, MP4 Player, Trimmers, Power Bank, Mobile Backup Power Supply, Bluetooth Speaker, IoT, and other DIY and Industrial applications.