Anker SOLIX C300 DC
#16 in SmallFull review
For travelers and campers who only need to charge USB-C and 12V devices and want the lightest 288 Wh option.
Amazon $189.99 Anker$189.99
The Anker SOLIX C300 DC is the better portable power station overall, rated 3.5 to 3.4. The Anker SOLIX C300 DC leads on battery life and features. The EnginStar R300 wins on AC output and value. The EnginStar R300 costs $40 less ($149.99 vs $189.99).
EnginStar R300
#22 in SmallFull review
A cheap, light 296Wh station for phones, cameras, CPAP and small camping loads. Buyers who will cycle it often should pay a little more for a LiFePO4 model with a longer warranty.
Amazon $149.99$149.99
Prices 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 Anker SOLIX C300 DC for battery life (LiFePO4, 3,000 cycles, 3-year warranty vs Lithium-ion, 1,000 cycles, 1-year warranty) and features (140 W USB-C vs no UPS, expansion or app).
- Choose the EnginStar R300 for AC output (300 W continuous AC vs No AC outlets (DC only)) and value ($0.51 per rated Wh vs $0.66 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 | Anker SOLIX C300 DC | EnginStar R300 |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Value 25% | 82 $0.66 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% | 81 LiFePO4, 3,000 cycles, 3-year warranty | 19 Lithium-ion, 1,000 cycles, 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 7 h |
| Portability 10% | 100 103 Wh per kg (6.2 lb (2.8 kg)) | 100 100 Wh per kg (6.5 lb (3 kg)) |
| Solar input 5% | 23 100 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
| Anker SOLIX C300 DC | EnginStar R300 | |
|---|---|---|
| Battery | ||
| Rated capacity | 288 Wh | 296 Wh |
| Chemistry | LiFePO4 | Lithium-ion |
| Cycle life | 3,000 to 80% | 1,000 >1000 cycles per the manual; end-of-life capacity not stated |
| Expandable | No | - |
| Output | ||
| AC output | None (DC only) | 300 W |
| AC outlets | 0 | 2 total |
| 120V 15A outlets (NEMA 5-15R) | - | 2 |
| AC waveform | - | Pure sine wave |
| USB-C ports | 4 (up to 140 W each) | 1 (18 W) |
| USB-A ports | 2 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | 2 |
| Charging | ||
| AC charging | - | 65 W |
| Full AC charge time | - | 7 h (About 7 hours per the manual and the B09SHB84J2 listing; a listing image says 5-7 hr. Another EnginStar listing (B0FJD7LCY4) claims 80% in 2 hours, which doesn't fit a 65W input and isn't used here.) |
| Max solar input | 100 W | - |
| Solar input voltage | 11-28V | 12-25V |
| Build | ||
| Weight | 6.2 lb (2.8 kg) | 6.5 lb (3 kg) |
| Dimensions | 4.89 x 4.72 x 7.87 in | 9.06 x 7.64 x 5.51 in |
| Warranty | 3 years | 1 years |
| Released | 2024-08 | 2024-05 |