DELTA Pro can expand capacity from 3.6kWh to 7.2kWh for battery backup power supply. That’ll give you days of power for your essential appliances.
DELTA Pro’s Smart Extra Battery benefits from all the charging methods DELTA Pro has, including 6500W MultiCharge. That means you can charge anytime, anywhere as long as your extra battery is connected to DELTA Pro. Once connected, they’ll charge/discharge in unison, keeping the battery percent level across both units.