OUPES 1800 vs BLUETTI AC180
OUPES vs BLUETTI 1.5kWh — budget challenger
Our Verdict
OUPES 1800 wins overall
Score 64 vs 61 —
better value at $0.54/Wh
| Spec | 1800 | AC180 |
|---|---|---|
| SunSee Score | 64★ | 61 |
| Capacity | 1,488 Wh★ | 1,152 Wh |
| AC Output | 1,800W | 1,800W |
| Surge Output | 3,600W★ | 2,700W |
| Solar Input | 500W | 500W |
| Weight | 17 kg | 16 kg★ |
| Cycle Life | 3,500 | 3,500 |
| Charge Time | 1.5h | 1.3h★ |
| $/Wh | $0.54★ | $0.61 |
| Battery Type | LiFePO4 | LiFePO4 |
Choose OUPES 1800 if:
- +1800W at great price
- +LiFePO4
- +UPS function
Choose BLUETTI AC180 if:
- +1800W at great price
- +Fast solar charging
- +Compact for capacity
Not sure which size you need?
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Size My SystemAffiliate Disclosure: Links may earn a commission at no extra cost to you. Learn more. Specs from official product pages as of July 2026.