Jackery · Compact (under 600 Wh)
Jackery Explorer 300
A compact unit, 294 Wh, 300 W (500 surge), 7.1 lb, $289 ($0.98 per Wh). It clears none of the six jobs on this site as sized; see below for what it does run.
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Should you buy it?
Not for: a day of home backup (too little capacity: needs 2,323 Wh and 1,351 W at start-up); a night of CPAP (too little capacity: needs 627 Wh and 124 W at start-up); two nights of camping (too little capacity: needs 2,066 Wh and 157 W at start-up); a day in an RV (too little capacity: needs 648 Wh and 156 W at start-up); a working day in a van (too little capacity: needs 2,295 Wh and 244 W at start-up); a laptop and two phones (too little capacity: needs 396 Wh and 60 W at start-up).
At $0.98 per watt-hour compare its cost with the charging speed and carry weight you need. It stores 41.4 Wh per pound. 9 other current units share its size class; the nearest four by capacity are compared below.
What it runs, and for how long
Hours = capacity × 0.85 ÷ device watts, with the draws from the device table.
| Device | Draw W | Hours | Can it start it? |
|---|---|---|---|
| CPAP machine (no heated humidifier) (without humidifier) | 45 | 5.5 | yes |
| CPAP machine (with heated humidifier) (with heated humidifier) | 53 | 4.7 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw, compressor cycling) | 41 | 6 | no |
| Laptop (MacBook Air, charging) (charger rating, continuous) | 40 | 6.2 | yes |
| Wi-Fi router | 24 | 10.4 | yes |
| Starlink Standard kit (dish + router) | 88 | 2.9 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 2.8 | yes |
| Camp LED light set (4 chainable lights) (one bulb) | 6 | 39.6 | yes |
At a glance
3.4 / 5
| Criterion | Score | Why |
|---|---|---|
| Fit for the job | 3.5 | Clears none of the 6 jobs on this site as sized; starts 12 of the 16 devices in the table |
| Value per watt-hour | 3.3 | $0.98 per Wh, 5th lowest of 10 compact units |
| Portability | 4.2 | 7.1 lb, 2nd lightest of 10 compact units |
| Recharge speed | 3.1 | 4.5 h from the wall |
| Chemistry and cycle life | 2.8 | Li-ion (unspecified), rated 800 cycles to 80% |
| Expandability | 2.5 | No extra batteries |
| Owner-reported reliability | 4.0 | Fan noise, app, firmware, failures and warranty handling across 4 reviews |
Full spec sheet
| Capacity | 294 Wh |
|---|---|
| Chemistry | Li-ion (unspecified) |
| Rated cycle life | 800 to 80% |
| Expandable | no |
| Continuous AC output | 300 W |
|---|---|
| Surge (peak) output | 500 W |
| AC outlets | 2 |
| USB-C ports / highest output | 1 / 60 W |
| USB-A ports | 2 |
| 12 V outputs | 1 |
| Wireless charging pad | – |
| UPS / EPS switchover | – |
| Max AC input | – |
|---|---|
| Wall recharge time | 4.5 h |
| Max solar input | – |
| Stated solar recharge time | 5 h at maximum input |
| App control | – |
| Weight | 7.1 lb (3.2 kg) |
|---|---|
| Dimensions | 9.1 x 5.2 x 7.8 in (230 x 133 x 199 mm) |
| Wh per lb | 41.4 |
| Release year | – |
| Warranty | 3 years |
| List price | – |
|---|---|
| Store price | $289 |
| Price per Wh | $0.98 |
Alternatives at this size
Listed smallest to largest by capacity; this unit is among them.
| Unit | Overall score | Wh | Output W (surge) | lb | Solar in W | Chemistry | Cycles | Price $ | $ / Wh | Store |
|---|---|---|---|---|---|---|---|---|---|---|
| BLUETTI Elite 30 V2 | 3.5 | 288 | 600 W | 9.5 | 200 | LiFePO4 | 3,000 to 80% | $449 | $1.56 | See it at BLUETTICheck price on Amazon |
| Jackery Explorer 300D | 2.8 | 288 | no AC outlet | 5.5 | 100 | LiFePO4 | 4,000 to 70% | $209 | $0.73 | See it at JackeryCheck price on Amazon |
| Jackery Explorer 300 | 3.4 | 294 | 300 W (500 surge) | 7.1 | – | Li-ion (unspecified) | 800 to 80% | $289 | $0.98 | See it at JackeryCheck price on Amazon |
| Goal Zero Yeti 300 | 3.5 | 297 | 350 W (600 surge) | 13.7 | 200 | LiFePO4 | 4,000 to 80% | $350 | $1.18 | See it at Goal ZeroCheck price on Amazon |
| 4Patriots Patriot Power Sidekick Solar Generator | 2.6 | 299 | 300 W (360 surge) | 8.4 | – | LiFePO4 | 2,000 | $500 | $1.67 | See it at 4PatriotsCheck price on Amazon |
See it at JackeryCheck price on AmazonEvery current Jackery unitDoes it hold enough for your devices?
Sources
- specs: jackery.com, 2026-09-06
- specs: api.myjackery.com, 2026-09-06
- price: jackery.com, 2026-09-19
- independent test: Wirecutter, 2019-02-06
- independent owner report: Tundras
- independent review: Thedigitalstory, 2014-03-24
- independent test: Backuppowerhub, 2025-11-17
- How the figures and scores are made