Bluetti
Bluetti AC300 + B300K
B4.2 2764.8Wh
A modular 24/7 UPS-style kit, the AC300 inverter head paired with one B300K battery, that expands with extra battery modules to over 11kWh.
2764.8Wh
Capacity
3000W
AC output
6000W
Surge output
LiFePO4
Battery
11059.2Wh
Max with expansion
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Our verdict
Splitting the inverter and battery into separate units is the point: the AC300 acts as a 24/7 UPS with 20ms switchover, and you scale storage independently by adding B300K modules. A flexible modular alternative to fixed-capacity flagships like the DELTA Pro 3.
Good
- 24/7 UPS with 20ms switchover
- Modular, so you scale battery separately from inverter
- 2,400W solar input
Watch out
- Base kit output trails 4,000W+ flagships
- Inverter and battery bought/weighed as separate units
Specifications
| Capacity | 2764.8 Wh |
|---|---|
| AC output | 3000 W |
| Surge output | 6000 W |
| Battery | LiFePO4 |
| Max with expansion | 11059.2 Wh |
| Max solar input | 2400 W |
| Weight | 51.1 kg |
| Cycle life | 4000 |