Window AC · ALLPOWERS R4000
How Long Will an ALLPOWERS R4000 Run a Window AC?
About 6.5 h for a 5,000 BTU window AC (450 W), by our math: 3,456 Wh × 0.85 ÷ 450 W. Across the cases below: 4.4 h to 6.5 h.
| Spec | ALLPOWERS R4000 |
|---|---|
| Battery | 3,456 Wh (maker spec) |
| Usable (× 0.85) | 2,938 Wh |
| Output / surge | 3,600 W / 6,000 W |
| Own draw | not listed |
| Solar input | 2,000 W |
| Price | $1,499 at ALLPOWERS |
Check R4000 price at ALLPOWERSPaid link
Window AC hours on the R4000
| Case | Watts | On the R4000 |
|---|---|---|
| 5,000 BTU window AC (Frigidaire) | 450 W | 6.5 h |
| 8,000 BTU window AC (Friedrich) | 661 W | 4.4 h |
Wh × 0.85 ÷ (watts + the station’s own draw, where the maker lists it).
Hours are nonstop; the compressor cycles off once the room is cool, so real hours are longer.
Can the R4000 start it?
We plan for a start of about 4× running watts, a figure from a generator maker (Polaris). Inverter ACs start more gently (Berkeley Lab). The R4000 has a 6,000 W surge. 5,000 BTU window AC: covers it; 8,000 BTU window AC: covers it.
How much an hour takes
An hour of a 5,000 BTU window AC running nonstop uses about 450 Wh, about 15% of the R4000’s usable 2,938 Wh. At its 2,000 W solar input and our 75% assumption, strong sun puts about 1,500 Wh an hour back into the battery.
AC manuals commonly say to plug into a wall outlet and not to use an extension cord; check yours first.
Window AC on similar stations
| Station | Capacity | 5,000 BTU window AC | Price |
|---|---|---|---|
| Jackery HomePower 3000 | 3,072 Wh | 5.8 h | $1,349 |
| BLUETTI Apex 300 | 2,765 Wh | 5 h | $1,499 |
| BLUETTI Elite 200 V2 | 2,074 Wh | 3.8 h | $899 |
| EcoFlow DELTA 3 Max Plus | 2,048 Wh | 3.9 h | $1,199 |
Maker prices, Oct 26, 2026, unless dated. Checkout price applies.
More: ALLPOWERS R4000 specs and every runtime · Window AC on every station · calculator for your own devices.
Quick answers
How long will the ALLPOWERS R4000 run a window air conditioner?
About 6.5 h for a 5,000 BTU window AC (450 W), by our math: 3,456 Wh × 0.85 ÷ 450 W.
Can the ALLPOWERS R4000 start a window air conditioner?
We plan for a start of about 4× running watts, a figure from a generator maker. Inverter ACs start more gently. The R4000 has a 6,000 W surge. 5,000 BTU window AC: covers it; 8,000 BTU window AC: covers it.
How long does the ALLPOWERS R4000 take to recharge with solar?
About 2.3 hours of strong sun from empty at its 2,000 W solar input, by our 75% assumption; clouds and winter sun add time.
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