BLUETTI AC50P
The AC50P holds 504 Wh behind 700 W of continuous AC output. It scores 5.2 out of 10 against the rest of this catalogue, ranking 14 of 15 in its size class. On the numbers, it switches over fast enough to carry a computer through a cut. The figure to watch is the other way: it refills slowly, which matters between two outages.
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Our score
Ranked 14 of 15 among units from 500 to 1,500 Wh
Scores are calculated from published specifications, not opinion. How the score is built
The full specification
Every figure below is read from the maker's own specification page. Where a value is missing, it is missing because BLUETTI does not publish it, not because it was too much trouble to find.
| Capacity | 504 Wh |
|---|---|
| AC output | 700 W |
| Surge | 1,200 W (Lifting Power) |
| Cell chemistry | LiFePO4 |
| Cycle life | 3,000 cycles to 80% |
| Wall recharge | 1.3 hours |
| Max solar input | 200 W |
| UPS switchover | 20 ms |
| Weight | 15.1 lb (6.9 kg) |
| Extra batteries | Not expandable |
Where it is strong, and where it is not
- Backup switchover. On this axis it switches over fast enough to carry a computer through a cut.
What should give you pause
- Recharge speed. Here it refills slowly, which matters between two outages.
- AC output. Here continuous output is limited, so heating appliances are out of reach.
- Capacity. Here capacity is modest, so plan around short runs rather than whole days.
What it will actually run
These estimates use the same arithmetic as the run time calculator: usable watt hours after an assumed 85% inverter efficiency, divided by the appliance's average draw rather than its peak. The fridge figure assumes the compressor runs about a third of the time, which is what makes it plausible.
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 10 h 12 min |
| CPAP machine | 45 W | 9 h 31 min |
| Router and modem | 15 W | 28 h 34 min |
| Television | 90 W | 4 h 46 min |
| Microwave | 1200 W | 0 h 21 min |
Read the rating plate on your own appliance before trusting any of these. The wattages above are common starting points, not measurements of your kit.
The closest alternatives
The units nearest this one in capacity, with their own scores. Capacity is the honest axis to shortlist on: two units of the same size are genuinely substitutable, and everything else is a trade.
| # | Brand | Model | Score | Capacity | AC output | Weight | Actions |
|---|---|---|---|---|---|---|---|
| 1 |  | EcoFlow RIVER 2 Max | 5.3/10 | 512 Wh | 500 W | 13.4 lb (6.1 kg) | Check price |
| 2 | | BLUETTI AC50B | 5.0/10 | 448 Wh | 700 W | 14.8 lb (6.7 kg) | Check price |
| 3 |  | Jackery Explorer 300 | 3.4/10 | 293 Wh | 300 W | 7.1 lb (3.2 kg) | Check price |
Common questions
How long will the AC50P run a fridge?
See the table above. The figure assumes an average domestic fridge and a compressor running about a third of the time. A warm room, a full shelf of fresh shopping or a door that keeps opening all push the real duty cycle up and the run time down.
What does the cycle rating promise?
That after 3,000 cycles to 80%, the pack still holds the stated share of its original capacity. It is a degradation threshold, not a failure point. Always note the endpoint when comparing against another maker: they do not all quote the same one.