Home use backup electric power box with following features:

1. Can pre-set to charge battery at low electric billing time each day;

2. Can discharge to home electric appliance at high electric billing time, to save your home electric bill money;

3. Automatically start to supply electric power to your home electric appliance when main electric power failure;

4. Plug and play connection, with screen panel showing necessary information

5. Sufficient to support one night electric consumption for refrigerator, air-conditioner and lamps (models from 2KW - 10KW for your required power)

6. Compact size with 4 wheels under the metal box, can easily move to any location at home;

Further use can connect to solar panel for alternative power supply.