Model ES-P-016050-XX3U Rated voltage 48V Rated capacity 50Ah Standard charge Constant current at 0.3C with max. voltage of 3.6V and cutoff current at 0.01C Standard discharge Constant current at 0.5C to 2.0V Max. charge current 50A(1C) Max. discharge current 50A(1C) Operating temperature Charge:0~45 deg.C;discharge:-20~65 deg.C Storage temperature -10~45 deg.C less than 3 months;-0~25 deg.C less than 1 year Weight Approx. 32KG Dimension 133*482*customized mm Cycle life More than 2000 times（0.5100%DOD，Maintain more than 80%） If you want to a specification of the product,pls contact me,I will send it to you. Features: 1. High temperature resistance 2. High working voltage for single battery cells 3. Pollution-free 4. Long cycle life(≥2000 times) 5. No memory effect 7. With short-circuit production function, safe and reliable 8. Factory price& High quality 9. No self discharge 10. Light weight, small size