Jackery Explorer 300
#13 in SmallFull review
A small, light LiFePO4 station for charging phones, laptops and cameras while camping or through a short outage.
Amazon $259 Jackery $289$259
The Jackery Explorer 300 is the better portable power station overall, rated 3.6 to 3.4. The Jackery Explorer 300 leads on battery life and features. The EnginStar R300 wins on value and portability. The EnginStar R300 costs $109.01 less ($149.99 vs $259).
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 22, 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 Jackery Explorer 300 for battery life (LiFePO4, 4,000 cycles, 3-year warranty vs Lithium-ion, 1,000 cycles, 1-year warranty) and features (100 W USB-C vs no UPS, expansion or app).
- Choose the EnginStar R300 for value ($0.51 per rated Wh vs $0.89 per rated Wh) and portability (100 Wh per kg (6.5 lb (3 kg)) vs 86 Wh per kg (7.5 lb (3.4 kg))).
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 | Jackery Explorer 300 | EnginStar R300 |
|---|---|---|
| Overall rating | 3.6/5 | 3.4/5 |
| Value 25% | 62 $0.89 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% | 90 LiFePO4, 4,000 cycles, 3-year warranty | 19 Lithium-ion, 1,000 cycles, 1-year warranty |
| AC output 15% | 41 300 W continuous AC | 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% | 74 86 Wh per kg (7.5 lb (3.4 kg)) | 100 100 Wh per kg (6.5 lb (3 kg)) |
| Solar input 5% | 50 solar input not published (neutral score used) | 50 solar input not published (neutral score used) |
| Features 5% | 20 100 W USB-C | 0 no UPS, expansion or app |
Specifications
| Jackery Explorer 300 | EnginStar R300 | |
|---|---|---|
| Battery | ||
| Rated capacity | 292 Wh | 296 Wh |
| Chemistry | LiFePO4 | Lithium-ion |
| Cycle life | 4,000 to 70% | 1,000 >1000 cycles per the manual; end-of-life capacity not stated |
| Output | ||
| AC output | 300 W (600 W surge) | 300 W |
| AC outlets | 2 total | 2 total |
| 120V 15A outlets (NEMA 5-15R) | 2 | 2 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 1 (100 W) | 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.) |
| Solar input voltage | - | 12-25V |
| Build | ||
| Weight | 7.5 lb (3.4 kg) | 6.5 lb (3 kg) |
| Dimensions | 9.1 x 5.2 x 7.8 in | 9.06 x 7.64 x 5.51 in |
| Warranty | 3 years | 1 years |