Melasta 4S1P 4.8V 2100mAh A NiMh Rechargeable Battery Pack LED Street Light Battery Pack Model:NH43A2100-4S1P Nominal Voltage:4.8V Nominal Capacity:2100mAh Battery configuration:4S1P Cycle life:4S1P standard charge time14~16h(420mA) Battery Cover color:Green, Blue, Purple, Orange PVC films Certifications:CE ROHS SGS MSDS UL IEC Protection Function:Over charge, Over discharge, Over current, Short circuit etc.