EC TECHNOLOGY&reg; 2 x 1600mAh Li-ion Battery For LG Sprint Optimus S LS670, LG Optimus M MS690, LG Optimus V VM670, Optimus C LW690, Optimus One P500, Optimus U T, LG G series GM750 GW880 GX300 GW825V GX500 GD888, LG Expo GW820 GW620, With 1 Free Travel Charger Type: Li - ion battery; Voltage: 3.7V. Capacity: 1600mAh, more than 500 charge cycles Compatible with LG Sprint Optimus S LS670,LG Optimus M MS690,Optimus C LW690,Optimus One P500,Optimus U/T,G series GM750/GW880/GX300/GW825V/GX500 package:2xbattery&1 x charger