First portable home battery designed for home backup a 3.6-25kWh expandable capacity with DELTA Pro Smart Extra Battery a 3600W-7200W AC output for 99% appliances a Plug & Play home backup solution a Incredible 6500W MultiCharge, 2.7 hours AC charging a Industry first: recharge at thousands of EV stations worldwide a Long-lasting LFP battery supports up to 10 years a adapter is required to connect the Alternator Charger to DELTA Pro