Jackery · Compact (under 600 Wh)
Jackery Explorer 300D
A compact unit, 288 Wh, no AC outlet, 5.5 lb, $209 ($0.73 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 $0.73 per watt-hour compare its cost with the charging speed and carry weight you need. It stores 52.3 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 | 5.4 | no |
| CPAP machine (with heated humidifier) (with heated humidifier) | 53 | 4.6 | no |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw, compressor cycling) | 41 | 5.9 | no |
| Laptop (MacBook Air, charging) (charger rating, continuous) | 40 | 6.1 | no |
| Wi-Fi router | 24 | 10.2 | no |
| Starlink Standard kit (dish + router) | 88 | 2.8 | no |
| TV, 50-inch LED / Crystal UHD | 89 | 2.8 | no |
| Camp LED light set (4 chainable lights) (one bulb) | 6 | 38.9 | no |
At a glance
2.8 / 5
| Criterion | Score | Why |
|---|---|---|
| Fit for the job | 1.7 | Clears none of the 6 jobs on this site as sized; starts 0 of the 16 devices in the table |
| Value per watt-hour | 3.4 | $0.73 per Wh, 3rd lowest of 10 compact units |
| Portability | 4.7 | 5.5 lb, the lightest of 10 compact units |
| Recharge speed | 1.6 | 100 W of solar input, about 2.9 hours of full sun to refill; 2.4 h from the wall |
| Chemistry and cycle life | 5.0 | LiFePO4, rated 4,000 cycles to 70% |
| Expandability | 2.7 | No extra batteries |
| Owner-reported reliability | 2.0 | Fan noise, app, firmware, failures and warranty handling across 1 reviews |
Full spec sheet
| Capacity | 288 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Rated cycle life | 4,000 to 70% |
| Expandable | no |
| Continuous AC output | no AC outlet |
|---|---|
| Surge (peak) output | – |
| AC outlets | 0 |
| USB-C ports / highest output | 3 / 140 W |
| USB-A ports | 1 |
| 12 V outputs | 1 |
| Wireless charging pad | – |
| UPS / EPS switchover | – |
| Max AC input | – |
|---|---|
| Wall recharge time | 2.4 h |
| Max solar input | 100 W |
| Stated solar recharge time | – |
| App control | – |
| Weight | 5.5 lb (2.5 kg) |
|---|---|
| Dimensions | 4.67 x 4.73 x 7.20 in (119 x 120 x 183 mm) |
| Wh per lb | 52.3 |
| Release year | – |
| Warranty | 5 years |
| List price | $249 |
|---|---|
| Store price | $209 |
| Price per Wh | $0.73 |
Before using the battery's cycle rating to judge value, read what LiFePO4 versus NMC means for lifespan and weight.
The solar-input wattage alone does not establish panel compatibility. Check how to match panel watts, voltage and connectors, then confirm the limits in this unit's manual.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| EcoFlow RIVER 3 Plus | 4.0 | 286 | 600 W (1,200 surge) | 10.4 | 220 | LiFePO4 | 3,000 to 80% | $279 | $0.98 | See it at EcoFlowCheck price on Amazon |
| 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 |
| OUPES Exodus 350 | 3.2 | 288 | 350 W (600 surge) | 9.2 | 240 | LiFePO4 | 4,000 to 80% | $299 | $1.04 | See it at OUPESCheck 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 |
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, availability: jackery.com, 2026-09-06
- independent test: OutdoorGearLab, 2026-07-24
- How the figures and scores are made