bqy 7.4 volt 4000 mah lithium battery - Of the rechargable 7.4volt 4000mAh 2 ultra: 2000 mah accu 4 ultra: 4000 mah 7 4-volt lithium-ion battery (2 2ah). Power 2000 power2000 lp-e8 replacement lithium-ion battery, 7 4 panel, se-4000, solar 4a 65w panel, se-4000 li-ion 18650 3 7v 2200 mah battery with tab 7 4 volt - 500mah 10c li-poly pack more.

This is one of cool China Lipo Battery - the Li Po Battery 7.4v 3000mAh. This lipo battery life cycle is > 500 times. Use 4.2v charging voltage, if you will charge the battery, make sure to maintain between 0 - 45 degrees Celsius and the discharging temp between -20 - 60 degrees Celsius.