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The short version
The Jackery 300 vs 300 Plus decision comes down to two units sitting 5Wh apart. The Explorer 300 holds 293Wh; the Explorer 300 Plus holds 288Wh. Both are rated at 300W of continuous AC output. The capacity gap is under two percent, smaller than the error in any runtime estimate, so it should not decide anything.
One thing has changed since both launched. Jackery now lists the 300 Plus as discontinued, and its US store forwards the 300 Plus page to the Explorer 300 v2, a 288Wh LiFePO4 replacement added to the comparison below. In October 2026 the original Explorer 300 is the one Jackery’s US store has in stock.
What separates them is battery chemistry, rated cycle life and warranty length. Before any of those, though, there is the thing buyers at this size get wrong most: the 300W output ceiling, not the 293Wh battery.
What 293Wh actually runs
Rated capacity is not what reaches your device. We work from usable energy — 85% of the rated figure through the AC outlets, 92% through USB and DC, which skip the inverter. That puts the Explorer 300 at roughly 249Wh usable on AC and 269Wh on USB, and the 300 Plus at 245Wh and 265Wh. Divide by the load:
- Router, 10W. 24.9 hours on the Explorer 300, 24.5 on the 300 Plus. A full day of internet through a short outage, and the best use of a battery this size.
- CPAP, 40W from the AC outlet (a 30W machine plus inverter idle). 6.2 hours versus 6.1, short of an 8-hour night. Run from a DC cable at 30W, it is 9.0 hours versus 8.8, one night with a little to spare. It also assumes 40W without a heated humidifier — switch that on and you can double the draw, which halves the night.
- Laptop, 60W. 4.2 hours from the AC outlet on the Explorer 300, 4.1 on the 300 Plus. Charge over USB-C instead and you get 4.5 and 4.4 hours.
- Mini fridge, 50W. 5.0 hours versus 4.9. A compressor fridge cycles rather than drawing continuously, so the real figure runs longer, but 5 hours is the floor to plan against.
- TV, 90W. 2.8 hours versus 2.7. Most of a film, not an evening.
Notice what that list does not contain. Nothing that heats, nothing that spins a motor. This is a battery for electronics, and at 293Wh it is a good one, but the runtimes are hours, not days.
Use USB-C where the device allows it. The same battery delivers about 8% more energy through USB-C than through the AC outlet, because the inverter never switches on. On a 60W laptop that is an extra twenty minutes per charge, free, on both units.
The 300W ceiling is what catches people
Neither unit will run a 1,000W microwave or a 1,500W kettle. Not for a burst, not at all. Both are rated at 300W continuous, and a load above that ceiling trips the inverter rather than draining the battery faster. It is a hard limit with nothing to do with capacity — a 3,000Wh battery behind a 300W inverter would refuse the same kettle.
Jackery lists a 500W surge rating for the Explorer 300 and a 600W peak for the 300 Plus, headroom meant for the brief inrush when a small compressor or pump starts. If you are buying specifically to start a fridge or a pump, check that its starting draw sits under those figures.
Watch out. Check the wattage label on the appliance before you buy, not after. Hair dryers, kettles, toasters, microwaves, space heaters and most coffee makers all sit well above 300W. A power station that cannot run the one device you bought it for is a total loss, and no amount of capacity fixes it.
Specifications side by side
| Spec | Explorer 300 | Explorer 300 Plus | Explorer 300 v2 |
|---|---|---|---|
| Capacity | 293Wh | 288Wh | 288Wh |
| AC output | 300W | 300W | 300W |
| Surge | 500W | 600W peak | 600W peak |
| Chemistry | Lithium-ion (NMC) | LiFePO4 | LiFePO4 |
| Cycle life | 500–800 cycles to 80% | 3,000 cycles to 80% | 4,000 cycles to 70%+ |
| Weight | 7.1 lb | 8.3 lb | 8.2 lb |
| AC charge time | 4.5 hours (2.5 adding a 60W USB-C PD charger) | 1.35 hours to 80% | About 1 hour to 80% |
| Ports | 2 AC, 1 USB-C (60W PD, in/out), 1 Quick Charge 3.0 USB, 1 USB, car port | 1 AC, 2 USB-C (one 100W in/out, one 15W), 1 USB-A 15W, 12V/10A car port | 2 AC, 2 USB-C (one 100W in/out, one 15W), 1 USB-A 15W, 12V/10A car port |
| Backup switchover | Not listed | EPS, within 20 ms (manual) | UPS, 0.01 s or less (FAQ: 20 ms) |
| App | Not listed | Wi-Fi and Bluetooth | Not listed |
| Warranty | 2 years (+1 bought from Jackery) | 3 years (+2 bought from Jackery) | 3 years (+2 bought from Jackery) |
| Price | $289 (maker list price, October 2026) | Discontinued | $299 (maker list price, October 2026; sold out) |
| Cost per Wh | $0.99 | — | $1.04 |
Jackery quotes the two charge times on different terms. Its Explorer 300 page gives 4.5 hours from the wall, or 2.5 hours with a 60W USB-C PD charger working alongside the 90W wall charger; its 300 Plus page on Jackery’s Canadian store gives 1.35 hours to 80% (both checked October 2026). For solar, Jackery quotes 3.5 hours to 80% from SolarSaga panels for the Explorer 300, and 7.5 hours to 80% from a 40W panel for the 300 Plus, which needs a separate 8020-to-USB-C adapter before a panel will connect. Jackery sells an Explorer 300, a 300 v2 and a 300D, all clustered around 288–293Wh, and their specifications are not interchangeable.
Cost per watt-hour
At Jackery’s October 2026 list prices the Explorer 300 works out to $0.99 per watt-hour and the 300 v2 to $1.04; the 300 Plus no longer has a US list price. A five-cent gap is noise. At this size you are paying a fixed premium for the enclosure, inverter and ports, and the cells are a small fraction of the total — which is why cost per watt-hour falls so sharply as you move up. If value per watt-hour is your priority, neither is the answer; a 1,000Wh unit beats both by a wide margin. Check the tiers against each other on our power station comparison tool first.
Warranty and chemistry
The 300 Plus carries a 3-year warranty against 2 years on the Explorer 300. At this price point that extra year is a clear advantage. Bought direct from Jackery, each unit also gets an automatic extension: one more year on the Explorer 300, two more on the 300 Plus and 300 v2. Jackery says units bought through Amazon and other third-party sellers have to be registered on its site to get the extension. Weight runs the other way: Jackery lists the 300 Plus at 8.3 lb and the Explorer 300 at 7.1 lb. Both are one-hand carries, so a pound either way changes nothing.
The 300 Plus uses LiFePO4 cells; the original 293Wh Explorer 300 uses NMC lithium-ion cells. The 288Wh Explorer 300 v2 is a separate LiFePO4 model and the 300D is different again, so check the exact model name before you buy. Chemistry drives cycle life: Jackery rates the 300 Plus for 3,000 cycles to 80% capacity (though the FAQ on Jackery’s Canadian 300 Plus page quotes 1,500 cycles to about 80%), while published figures for the Explorer 300 range from 500 to 800 cycles to 80%. A unit that states its cycle count is worth more than one that only states its chemistry — our power station guide covers what those ratings mean in practice.
Ports, backup and the Explorer 300 v2
At this size the ports matter more than 5Wh. The Explorer 300 has two AC outlets, but its USB-C port is rated at 60W, so if your laptop came with a larger charger, check that it will charge from 60W. The 300 Plus flips that: its main USB-C port handles 100W in or out, with a second 15W USB-C beside it, but it has a single AC outlet (Jackery’s 300 Plus user manual). The Explorer 300 v2 has both: two AC outlets, the same 100W and 15W USB-C pair, a 15W USB-A and a 12V/10A car port (Jackery tech specs, checked October 2026).
For backup, the 300 Plus and 300 v2 can both sit between the wall and a router. Plugged in, they pass grid power through to the AC outlet and switch the load to the battery when the grid drops. Jackery’s 300 Plus manual calls this EPS, gives a switchover within 20 ms, and says it is not a professional UPS and should not be used for equipment such as data servers. The 300 v2 page calls its version UPS and gives 0.01 seconds or less in its feature list but 20 ms in its FAQ, so plan on 20 ms for both. The Explorer 300 page lists no backup mode. The 300 Plus is the only one whose page lists app control, over Wi-Fi or Bluetooth. The Explorer 300 charges from a separate 90W wall charger; the 300 Plus and 300 v2 take a plain AC cord, and Jackery quotes about 76 minutes from empty to full for the 300 v2.
Two things to know. Energy Saving Mode can cut a light overnight load. On the 300 v2, when switched on, it shuts every output off after 6 hours if the draw stays under 25W on AC or 2W on USB and DC, enough to drop a 10W router; slide the switch off for long, light loads. The 300 Plus manual says its version is on by default and turns all outputs off after 12 hours at light loads; long-press the AC and main power buttons together to turn it off. And Jackery’s FAQ says its power stations are not designed or intended for medical devices, so treat the CPAP runtimes above as arithmetic, not a medical backup plan.
Which one to buy
On published specs the 300 Plus beats the Explorer 300: an extra year of warranty and a LiFePO4 battery rated for far more cycles, against 5Wh — six minutes on a 50W mini fridge — and about 1.2 lb more weight. It is not close. The catch is that Jackery has discontinued it. Buy the Jackery Explorer 300 v2 when Jackery has it in stock: it keeps the 300 Plus’s LiFePO4 chemistry, 288Wh, 600W peak and USB-C ports, carries the same 3+2-year warranty, and adds a second AC outlet. A new 300 Plus from a retailer that still has one is a sound buy too.
If you would rather not wait, the Jackery Explorer 300 is still in Jackery’s US lineup, and at 7.1 lb it is the lightest of the three. Published figures put its NMC battery at 500 to 800 cycles to 80%, roughly 16 months to two years of daily cycling before it is down to 80% capacity, so it suits trips and occasional outages better than daily use. Jackery also lists it at 500W surge against 600W peak for the LiFePO4 units, so if your plan involves starting anything with a motor or compressor — a cooler or a pond pump — check the appliance’s starting draw against that figure first. For phones, laptops, cameras and a router through an outage, which is what most buyers at this size are actually doing, it does the job.