3S1200 : 11.1 volt 1200mAh Li-PO battery for RC electric motors. 25C rating. Size: 2.75" x 1.375" x 0.625". Weighs 3 ounces (86gms). Includes balance charging connector and choice of motor connector. Picture shows battery with red T Ultra motor connector. Re-charges with smart LiPO chargers such as B3AC, YT-0006S, UP100AC, etc.