ultrafire is a top notch brand in battery production, the present product is a 3.7v long battery with 1200mah capacity, it is popularly used in power banks, charging toys and many rechargeable electronic devices,lot of chinese toys and electronic devices yse this type of battery, so for replacing the battery for those devices,it is very hard to find in the market, we are providing you with good price.2 Pcs 14500 Rechargeable battery Lithium Ion 3.7V 1200mAh. Rechargeable battery, no memory effect, recharge up to 1000 cycles. Safe and environmental friendly. High energy density, long life battery. For appliances like Flashlight Torch Light, Cameras, RC Toys, Remote Controls, MP3 Players etc. Provides excellent continuous power sources to your device. With protection circuit board, guards against over-charge, over-discharge and over-current.