The BLUETTI Apex 300 is a freestanding home battery backup system that delivers whole-home style power without requiring a rooftop solar installation. It provides true 120V/240V split-phase output, so it can run both standard 120V circuits and 240V appliances, and starts at 2,764.8Wh of EV-grade LiFePO4 capacity that's expandable up to 58kWh with B300K and B500K expansion batteries.
A 0ms UPS switchover keeps sensitive electronics running uninterrupted during a grid outage, and 12kW of bypass power lets it carry heavy loads like HVAC systems and EV chargers. The BLUETTI app adds storm-tracking alerts that automatically prep the system ahead of severe weather, plus remote monitoring and OTA updates.
Key Specs:
Battery Capacity: 2,764.8Wh (expandable to 58kWh)
AC Output: 3,840W continuous / 7,680W surge
Output Voltage: 120V/240V split-phase
Solar Input: up to 4,000W (with SolarX 4K controller)
AC Charging Input: 15A at 120V/240V; generator charging up to 11.5kW
Battery Chemistry: EV-grade LiFePO4, 6,000+ cycles to 80% capacity
UPS Switchover: 0ms
Bypass Power: 12kW
Compatible Expansion Batteries: B300K, B500K
Testing: MIL-STD-810G
Pair the Apex 300 with a SolarX 4K controller and expansion batteries to build a scalable whole-home backup system, or run it standalone for strong, flexible backup power.
