A DC-only battery for charging phones, laptops and USB lights on day trips. Choose it over a large power bank when you want LiFePO4 longevity and 140W USB-C.
Amazon EcoFlow $119The EcoFlow TRAIL 200 DC and the MARBERO M823 are evenly matched, rated 3.4 and 3.3. The EcoFlow TRAIL 200 DC leads on battery life and features. The MARBERO M823 wins on AC output and value.
A very light, low-cost 237Wh station for charging phones, cameras and a CPAP on short trips. Buyers who need longer battery life or laptop-speed USB-C should look at LiFePO4 models.
Amazon $119.69Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the EcoFlow TRAIL 200 DC for battery life (LiFePO4, 3-year warranty vs Lithium-ion, 1-year warranty) and features (140 W USB-C vs no UPS, expansion or app).
- Choose the MARBERO M823 for AC output (300 W continuous AC vs No AC outlets (DC only)) and value ($0.51 per rated Wh vs $0.62 per rated Wh).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every small portable power station; a clear win is highlighted. How we rank explains each one.
| Factor weight | EcoFlow TRAIL 200 DC | MARBERO M823 |
|---|---|---|
| Overall rating | 3.4/5 | 3.3/5 |
| Value 25% | 85 $0.62 per rated Wh | 95 $0.51 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 60 LiFePO4, 3-year warranty | 15 Lithium-ion, 1-year warranty |
| AC output 15% | 0 No AC outlets (DC only) | 41 300 W continuous AC |
| Charging speed 10% | 50 full AC charge time not published (neutral score used) | 0 0-100% on AC in 6 h |
| Portability 10% | 100 105 Wh per kg (4 lb (1.8 kg)) | 100 114 Wh per kg (4.6 lb (2.1 kg)) |
| Solar input 5% | 0 0 W max solar input | 50 solar input not published (neutral score used) |
| Features 5% | 20 140 W USB-C | 0 no UPS, expansion or app |
Specifications
| EcoFlow TRAIL 200 DC | MARBERO M823 | |
|---|---|---|
| Battery | ||
| Rated capacity | 192 Wh | 237 Wh |
| Chemistry | LiFePO4 | Lithium-ion |
| Expandable | No | - |
| Output | ||
| AC output | None (DC only) | 300 W (375 W surge) |
| AC outlets | 0 | 2 total |
| 120V 15A outlets (NEMA 5-15R) | - | 1 |
| 120V 2-prong outlets (NEMA 1-15R) | - | 1 |
| AC waveform | - | Pure sine wave |
| USB-C ports | 2 (up to 140 W each) | 1 (18 W) |
| USB-A ports | 2 | 4 |
| 12 V car outlet | No | No |
| DC5521 ports | 0 | - |
| UPS / pass-through | No | - |
| Charging | ||
| Full AC charge time | - | 6 h ("Fully quick charged in 6hrs" from the wall per the listing; 8 hr from a 12V car socket) |
| Max solar input | 0 W | - |
| Solar input voltage | - | 16.4-24V |
| Car charging | 0 W | - |
| Build | ||
| Weight | 4 lb (1.8 kg) | 4.6 lb (2.1 kg) |
| Dimensions | 6.57 x 4.53 x 4.96 in | 8.15 x 5.83 x 3.90 in |
| App | - | - |
| Warranty | 3 years | 1 years |
| Released | 2025-08 | 2025-10 |
