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MARBERO · portable power station
MARBERO M823
Small class (under 500 Wh). #7 of 218 portable power stations on Benchwatt by popularity on Amazon US.
Capacity
237 Wh
Output
300 W
Weight
4.6 lb
Wh per lb
52
Price and availability are on Amazon; we don't show or track prices.
Published specs
| Brand | MARBERO |
|---|---|
| Model | M823 |
| Battery capacity | 237 Wh |
| Rated AC output (continuous) | 300 W |
| Surge / peak output | 375 W |
| Weight | 4.6 lb |
| Amazon ASIN | B0CJHNCZ8T |
| Specs checked | November 11, 2026 |
From the maker's listing. Specs not stated there are left out rather than guessed.
Our math
52 Wh per pound (237 Wh ÷ 4.6 lb). That is #15 of 184 portable power stations on Benchwatt with a listed weight. Higher means more stored energy for each pound you carry.
At its full rated 300 W, a full charge lasts about 40 min.
Runtime estimates
Hours = 237 Wh × 0.85 ÷ device watts. Typical draws; check your own device's label.
| Device | Draw | Runtime |
|---|---|---|
| Phone charging | 10 W | 20 h |
| Laptop | 60 W | 3.4 h |
| CPAP (no humidifier) | 40 W | 5 h |
| Mini fridge (average draw) | 60 W | 3.4 h |
| Full-size fridge (700 kWh/yr label) | 80 W | 2.5 h |
| TV | 100 W | 2 h |
| Space heater | 1,500 W | Exceeds rated output |
Estimates, not measurements. Fridges cycle on and off, so their average draw is well under their rated watts; heaters and kettles run near full power.
Similar capacity
Other portable power stations within ±35% of 237 Wh, most popular first.
| Model | Capacity | Output | Cells | Weight | Wh/lb | Amazon link |
|---|---|---|---|---|---|---|
| MARBERO M823 | 237 Wh | 300 W | — | 4.6 lb | 52 | Check price on Amazon |
| Jackery Explorer 300 | 292 Wh | 300 W | LiFePO4 | 7.1 lb | 41 | Check price on Amazon |
| Anker SOLIX C300 DC | 288 Wh | 300 W | LiFePO4 | 6.2 lb | 46 | Check price on Amazon |
| Bluetti Elite 30 V2 | 288 Wh | 600 W | LiFePO4 | 9.5 lb | 30 | Check price on Amazon |
| MARBERO M823SL60 | 237 Wh | 300 W | Li-ion | 9 lb | 26 | Check price on Amazon |
| ZeroKor 280Wh | 280 Wh | 300 W | — | 5.1 lb | 55 | Check price on Amazon |
| EnginStar R300 | 296 Wh | 300 W | Li-ion | 7.9 lb | 37 | Check price on Amazon |
MARBERO M823
237 Wh / 300 W. See the current price and seller on Amazon.