Battery Volt: 3.7V, Battery capacity: 1200mAh Plug Type: SM Connector Function: As a spare battery for a your remote-controlled car and can extend the playing time Quality Guaranteed:1200mAh adequate battery capacity. Battery Size / Weight: 6.9*1.8cm /40g Product description Note: 1.Please turn off the power switch and unplug the battery connector after use 2.DO NOT Attempt to open ,disassemble the battery pack 3.DO NOT Crush,puncture,short external contacts or dispose of in the fire or water 4.DO NOT Expose to temperature above 60°ˆ140° 5.DO NOT Overcharging and over-discharging Package Including 2 * 1S 3.7V 1200mAh lipo battery 1 * USB Charger.