6.4V 2S 900mAh 1850 LiFePO Battery EL4.5-3P Female Plug P-TO-R Made By: HFC Item No.: HFC1850BA Battery Type: LiFePO 1850 Battery Capacity: 900mAh (real capacity 1000mAh) Battery Voltage: 6.4V/2S Constant Discharge: 15C Charge Rate: 0.7-1.5A Charge Voltage: 7.2V Size: L*W*H=55*38*19mm /2.17*1.28*0.67in Weight: 66g /2.33oz EL4.5-3P female plug (outside plasic female shell + inside metal male terminals) (Positive TO Round hole, Negative TO Square hole) Q'TY: 1P