Expand Your Power At Will BLUETTI AC300 is 100% modular, supporting up to 4×B300 (3,072Wh per pack) battery modules for a groundbreaking capacity of 12,288Wh! Power your basic family needs for DAYS during emergencies or power outages! Expandable Power Supply As BLUETTI's first 100% modular station, the AC300 can accept external battery packs and boost its capacity to a Max. 12,288Wh. From emergency backup to off-grid power source, this generator for home backup is sure to handle all your electricity needs. 5400W Blazing Input Rate Plug in the wall outlet and solar panels, you can fast charge the AC300 much faster at a 5,400W Max rate, saving you a lot of charging time. *The 5,400W input rate combines 2,400W solar and 3,000W AC, which requires two B300 batteries. Or the rate would be limited to 3,000W with only one B300. 5 Ways to Charge Flexible to charge your AC300 via wall outlet, solar panels, car, generator and lead-acid battery, etc. Stay connected anytime, anywhere. Multiple Outlets for Every Need The 12V/30A DC port are perfect for RVers. Meanwhile, the wireless chargers enable you to charge compatible smart phones, earphones and so on.