15-year lifespan battery with BMS system has stable and outstanding performance, there will be no overheating, overvoltage, overcharge, over-discharge, overcurrent, short circuit or other phenomena. For real-time monitoring, the battery status can be checked via LCD digital, any problems you can find and solve in time. Many customers enjoy their life by installing various sizes lithium latterie roller devices. Not only it can help people save money, by storing sun power from solar panels during the day and use at night; but also stable power.More