Best portable power station for a window air conditioner (2026)
Short answer. Buy the BLUETTI Elite 300 ($1,199; buy: https://dealectric.com/go/bluetti-elite-300): 3,014 Wh LiFePO4 and a 2,400 W inverter for $1,199, less than the other 3kWh portable power stations (EcoFlow DELTA 3 Ultra $1,299, Anker SOLIX F3800 $2,404.10). Runtime: an 8,000 BTU window AC draws about 695 W (GE AHEK08AC), so about 3.7 hours running flat out and 5–7 hours as the compressor cycles; a 5,000 BTU unit (450 W, Frigidaire) about 5.7 hours flat out. BLUETTI lists an air conditioner (740 W) at 3.3 hours on it.
On 2 kWh, BLUETTI's Elite 200 V2 is $854.05 after the code (EcoFlow DELTA 3 Max $879, Anker SOLIX C2000 Gen 2 $999.99): about 2.5 hours of an 8,000 BTU AC. Startup surge: a window AC's compressor pulls several times its running watts for a moment; an inverter window AC (Midea U) ramps up instead.
- BLUETTI Elite 300, $1,199. Buy: https://dealectric.com/go/bluetti-elite-300
- BLUETTI Elite 200 V2, $899. Buy: https://dealectric.com/go/bluetti-elite-200-v2 — code AFF5OFF saves $44.95, $854.05 after the code (tested daily in BLUETTI's cart, last passed 2026-11-01). The buy link opens checkout with it already applied.
Published 2026-11-02 · prices checked 2026-11-02.
| Model | Battery | AC output | 8,000 BTU (695 W) hours | 5,000 BTU (450 W) hours | Weight | Price | Code |
|---|---|---|---|---|---|---|---|
| BLUETTI Elite 300 Buy: https://dealectric.com/go/bluetti-elite-300 | 3,014 Wh LiFePO4 | 2,400 W | about 3.7 (5–7 cycling) | about 5.7 | 26.3 kg | $1,199 | No discount code applies. |
| EcoFlow DELTA 3 Ultra | 3,072 Wh LiFePO4 | 3,600 W (7,200 W surge) | about 3.8 | about 5.8 | 32.7 kg | $1,299 (EcoFlow, Best Buy) | Not sold through Dealectric; listed for comparison. |
| Anker SOLIX F3800 | 3,840 Wh LiFePO4 | 6,000 W | about 4.7 | about 7.3 | about 60 kg | $2,404.10 (Home Depot) | Not sold through Dealectric; listed for comparison. |
| BLUETTI Elite 200 V2 Buy: https://dealectric.com/go/bluetti-elite-200-v2 | 2,073.6 Wh LiFePO4 | 2,600 W | about 2.5 | about 3.9 | 24.2 kg | $899 | Code AFF5OFF saves $44.95: $854.05 after the code; tested daily in BLUETTI's cart, last passed 2026-11-01. Already applied by the buy link. |
| EcoFlow DELTA 3 Max | 2,048 Wh LiFePO4 | 2,400 W (4,800 W surge) | about 2.5 | about 3.9 | 20.3 kg | $879 (EcoFlow, Best Buy; sale) | Not sold through Dealectric; listed for comparison. |
| Anker SOLIX C2000 Gen 2 | 2,048 Wh LiFePO4 (to 4 kWh) | 2,400 W (4,000 W surge) | about 2.5 | about 3.9 | 18.9 kg | $999.99 (Anker SOLIX, sale) | Not sold through Dealectric; listed for comparison. |
Rows marked with a code and buy link are products Dealectric lists: the price was verified on the brand's own US store on 2026-10-27 and the code is tested daily in that brand's cart; the date shown is its last pass (last check 2026-11-02). The other rows (Anker SOLIX, EcoFlow) are included so the comparison is complete; their figures and prices were read from the makers' own US pages on 2026-11-02 and are not re-checked daily. The buy links are affiliate links: they open the brand's official US store at no cost to the shopper, and the commission pays for the testing; see the disclosure.
How many watts a window air conditioner uses
From the makers' spec sheets: a 5,000 BTU Frigidaire (FFRA051WAE) 450 W; an 8,000 BTU GE (AHEK08AC) 695 W; an 8,000 BTU Midea U inverter (MAW08V1QWT) 710 W rated, less once the room is cool. The compressor cycles, so over an hour a fixed-speed unit uses about 50–70% of its running watts on a warm day.
Startup surge
A fixed-speed compressor draws its locked-rotor current (LRA on the nameplate) for a fraction of a second; LRA × 115 V is the surge to compare with the station's surge rating. BLUETTI's "Power Lifting" figures are for resistive loads such as heaters, not motor starts, so go by the 2,400 W rating; 5,000–8,000 BTU units are within what these stations start. An inverter window AC starts slowly and avoids the spike.
Runtime math
Hours ≈ battery Wh × 0.85 ÷ the AC's watts. For a night, 8 hours of an 8,000 BTU AC cycling takes about 3–4 kWh of battery; with less, cool the room before sleeping and let the station run the AC in the hottest hours.
Sources
- Frigidaire FFRA051WAE (5,000 BTU) — support.frigidaire.com
- GE AHEK08AC (8,000 BTU) — www.ajmadison.com
- Midea U MAW08V1QWT (8,000 BTU inverter) — www.ajmadison.com
- BLUETTI Elite 300 — www.bluettipower.com
- EcoFlow DELTA 3 Ultra — us.ecoflow.com
- EcoFlow DELTA 3 Max — us.ecoflow.com
- Anker SOLIX C2000 Gen 2 — www.ankersolix.com
Published 2026-11-02; figures for other brands read on 2026-11-02; our prices verified 2026-10-27. Corrections welcome at [email protected] or /feedback.