... protectionOn battery mode, overload more than 110%, Inverter will give warning (beeping) for 30 seconds, after 30 seconds, ... inverter instantly switches off. On normal model, overload will activate the beeping warning until loading is reduced to ... function Individual chargerWhen main power comes back, battery will be recharged automatically ModelPSI-800PSI-1000PSI-2000PSI-5000PSI-7000Capacity800VA ...