Looking for a reliable and versatile home battery backup solution? Look no further than the BLUETTI AC300+1B300+3PV420! With its 100% modular design, this system can support up to four B300 battery modules, giving you an unprecedented capacity of 12,288Wh. That means you can power your basic family needs for days during emergencies or power outages. And with a 3000W pure sine wave inverter, the AC300 can adjust the charging rate from 1800W to 3000W via wall outlets according to your needs. Plus, with a blazing input rate of 5400W, you can fast charge the AC300 much faster at a 5400W max rate when you plug it into both a wall outlet and solar panels, saving you on charging time. With the option to connect two AC300S in series for 240V/6,000W output and a total capacity of 24,576Wh, you can easily power your home whenever power outages occur. And with the BLUETTI Smart Home Panel, you can tie the AC300 power system to your home grid, ensuring 24/7 UPS home backup. So why wait? Get your BLUETTI AC300+1B300+3PV420 today and expand your power at will!