... d.Waterproof/Dustproof. Feature1.Built-in automatic protection for cell over/under voltage, pack over/under voltage, charge ... .3.No battery management system required.4.PowerPump cell-balancing. PowerPump technology transfers charge between cells to ... SMBus communication interface to monitor cell voltage, current, temperature, SOC, ect. 12v160ah lithium battery for backup system Specifications12V- ...