Bluetti AC300 + B300K vs EcoFlow DELTA Pro Ultra
A side-by-side look at the Bluetti AC300 + B300K and EcoFlow DELTA Pro Ultra. Winning figures are highlighted.
| Bluetti Bluetti AC300 + B300K | EcoFlow EcoFlow DELTA Pro Ultra | |
|---|---|---|
| Price from | £1,799 | £4,299 |
| Capacity | 2764.8 Wh | 6144 Wh |
| AC output | 3000 W | 7200 W |
| Surge output | 6000 W | 10800 W |
| Battery | LiFePO4 | LiFePO4 |
| Max with expansion | 11059.2 Wh | 90000 Wh |
| Max solar input | 2400 W | 5600 W |
| Weight | 51.1 kg | 82.4 kg |
| Cycle life | 4000 | 3500 |
Bluetti AC300 + B300K
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.
Full Bluetti AC300 + B300K review →EcoFlow DELTA Pro Ultra
The ceiling of what a non-installed, plug-and-play system can do: enough continuous output for a whole home and expansion headroom to 90kWh with extra inverters and batteries. Heavy and expensive — really a whole-home-backup project rather than an impulse buy.
Full EcoFlow DELTA Pro Ultra review →