... ; 2.could match the charger for you; 3.waterproof Features:1.Built-in automatic protection for cell over/ ... and zero-volt charging with separate MOSFET control3.No battery management system required4.PowerPump cell-balancing. PowerPump technology transfers ... monitor cell voltage, current, temperature, SOC, ect.12v 60ah lithium battery pack Specifications12V-60AhVoltage14.8 V Nominal Capacity (C/5, 23° ...