Jackery Explorer 300: Specs, Run Times and Who It Suits
The Jackery Explorer 300 is listed by Jackery at 293 Wh with a 300 W AC output. Using our 85% usable-share assumption, that runs a 10 W LED bulb for about 24.9 hours and a 76 W average refrigerator load for about 3.3 hours. It cannot run a 1,500 W space heater or a microwave. Prices read 2026-11-02.
Run time on a Jackery Explorer 300, by load
- LED bulb (10 W)24.9 hours
- Wi-Fi router (12 W)20.8 hours
- Refrigerator, average (76 W)3.3 hours
- 55-inch TV (103 W)2.4 hours
Hours are our arithmetic: the listed 293 Wh, times a planning share of 85% usable, divided by the load’s watts. The 85% is our assumption, not a Jackery figure. The refrigerator figure is a 24-hour average, not the higher draw when its compressor starts. Load wattages and their sources are in the guide below.
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What the Jackery Explorer 300 runs, and for how long
A watt-hour (Wh) is a unit of stored energy. A load in watts drawn for one hour uses that many watt-hours. A 10 W bulb for ten hours uses 100 Wh. Jackery's own pages list the Explorer 300 at 293 Wh, so on paper it holds enough for about three of those ten-hour bulb days, but no unit hands over its full label capacity to an AC load.
This guide uses a planning assumption of 85% usable capacity. That share is our assumption, not a Jackery figure. Inverter losses and battery limits mean the energy you can draw through the AC outlets is lower than the number on the label. The run times below are our arithmetic: capacity, times 0.85, divided by the load in watts. Each load's wattage and where it came from are in the table, because several are single-model figures and your own device will differ.
| Load | Watts used | What that figure is | Run time on the Explorer 300 |
|---|---|---|---|
| LED bulb | 10 W | Top of the DOE FEMP range of 5.9 to 10.5 W for an 800-lumen LED | 24.9 hours |
| Wi-Fi router | 12 W | Netgear's idle figure for one model, the Nighthawk BE17000 | 20.8 hours |
| Phone charger | 20 W | Apple's recommended adapter rating, an upper bound and not a measured draw | 12.5 hours |
| Refrigerator, average | 76 W | Our arithmetic on one ENERGY STAR listing: 665 kWh a year divided by 8,760 hours | 3.3 hours |
| 55-inch TV | 103 W | ENERGY STAR on-mode listing for one LG OLED model | 2.4 hours |
| Space heater | 1,500 W | The common rating, as described in a CPSC recall notice | over rated output |
| Microwave oven | 1,583 W | DOE 2017 test-procedure data for microwave-only cooking | over rated output |
"Over rated output" means the load is bigger than the unit's rated AC output. A 300 W unit cannot run a 1,500 W load at all, so no run time exists. The heater and microwave rows are not a question of time; the Explorer 300 is the wrong size for them. The full method, including why the fridge figure is an average and not a startup draw, is on the what can a solar generator run page.
Specifications as Jackery lists them
Jackery's Explorer 300 page contradicts itself in several places. The table reports each field with its status, and where the page disagrees with itself, both figures are given. Source: Jackery's Explorer 300 page, read 2026-11-02.
| Field | What Jackery's page says | Status |
|---|---|---|
| Capacity | 293 Wh in the body, FAQ and collection page; the header says 292 Wh | Stated, page disagrees with itself |
| Rated AC output | 300 W | Stated |
| Surge output | Not found in the page text; the spec table appears to be an image | Can't be checked |
| Battery chemistry | LiFePO4; 4,000+ cycles to 70% capacity | Stated |
| Ports | Header: 2 AC outlets, 100 W USB-C PD, 2 USB-A, a 120 W car port. Body text: 2 AC outlets, 60 W USB-C PD, a QC 3.0 USB port | Stated, copy conflicts |
| AC recharge | Collection page: 2.5 hours via AC. Body: 2.5 hours with a 90 W wall charger and a 60 W USB-C PD charger together; wall charging alone is also shown at 4.5 hours | Stated, conditional |
| Solar input maximum | Not found | Can't be checked |
| Solar recharge | Header: 80% in about 2.8 hours with a 100 W panel, 7.5 hours with a 40 W panel. Body: 3.5 hours to 80% with a SolarSaga 100W, and 5 hours in a chart | Stated, copy conflicts |
| Weight | 7.5 lb in the header; 7.1 lb on the collection page | Stated, page disagrees with itself |
| Warranty | 5 years, applying to a purchase on jackery.com | Stated |
| Price | $289.00 on 2026-11-02; no sale price and no list price shown | Stated |
The body text of the page looks like older copy to us, which would explain the conflicting ports and solar times. We cannot confirm that, so treat any single solar-time figure as unsettled and read the page again before relying on one. Jackery's separate service policy page lists a 2 plus 1 year warranty for its "300 Series", which differs from the 5 years on the product page. Where they disagree, the product page governs for a purchase on jackery.com and the policy page is the general rule.
At $289.00 and 293 Wh, the price works out to about $0.99 per watt-hour on 2026-11-02. That is a snapshot from a holiday-sale period and may change.
Which model number is which: 300, 300 v2 and 300D
Jackery sells three products with 300 in the name. They are not interchangeable.
| Name on Jackery's site | Capacity | AC output | Price read 2026-11-02 | Notes from the page |
|---|---|---|---|---|
| Explorer 300 | 293 Wh | 300 W | $289.00 | The page this guide is about |
| Explorer 300 v2 | 288 Wh | 300 W rated, 600 W surge | $279 sale, $299 list | Jackery's page points readers to the Explorer 300 as an alternative; availability can't be checked here and may change. Weight 8.16 lb; 3 plus 2 year warranty. A bundle with a 40 W SolarSaga 40 Air panel is $379 sale, $419 list |
| Explorer 300D | 288 Wh | Not stated | $209 sale, $249 list | Described by Jackery as a DC and USB device charger; the header says "140W Output" and the body says 300 W DC output. No AC outlet is stated, so we give no run times for it |
The practical point is the 300D. If your plan involves a household plug, a fridge or a router with a wall adapter, a unit with no stated AC output does not fit that plan, and Jackery's own collection page steers campers who want a household plug to a larger model. The 300 v2 is stated at 288 Wh, five watt-hours below the 300, and its stated 600 W surge is a figure the original 300's page does not give.
Who the Jackery Explorer 300 fits
On Jackery's numbers and our arithmetic, the Explorer 300 suits a small, defined list of loads:
- Phones, tablets and a router for a day or two. Twelve and a half hours at 20 W is an upper-bound figure, so real phone charging should stretch further.
- LED lighting. At 10 W per bulb, 24.9 hours is for one bulb; two bulbs halve it.
- A weekend of light camping use, built from those same small loads. The camping and RV sizing page shows the sums.
- A small, deliberate load list. If you can write down every device you want to power and add the watts, a 300 W unit works only if the total stays under 300 W at any moment.
It is a poor fit if you want to cover a refrigerator through an outage. A 76 W average gives about 3.3 hours on this unit. FoodSafety.gov says an unopened refrigerator keeps food safe for about 4 hours without power, and the 300's run time is shorter than that. The 76 W is an average over a year; a compressor draws more when it starts, and GE's support pages put start-up draw at two to three times running draw. Do not read 3.3 hours as a promise. It is a planning figure from our arithmetic.
Who needs a different size
- A refrigerator or freezer, for a whole outage. Look at the Jackery Explorer 1000 lineup or the Explorer 2000. On the 1000 v2, the same 76 W average runs for about 12.0 hours; on the 2000 v2, about 22.8 hours (our assumption, 85% usable).
- Anything with a heating element. A 1,500 W space heater or a 1,583 W microwave is over this unit's rated output.
- A medical device. Read the label on your machine and its power supply, and ask its maker for the running watts. Jackery's page does not say the Explorer 300 will keep a medical device running, and this guide does not either.
- A household that wants several things at once. The 300 W ceiling applies to everything plugged in together.
If you want a broader comparison across sizes, the Jackery review covers the lineup, and our best solar generator page lays out the criteria used across this site. For head-to-head comparisons with other brands at a similar capacity, see Jackery vs EcoFlow and Jackery vs Bluetti.
What this page does not cover
No agency page we read names battery power stations, so there is no government guidance here about where or how to operate one. Use the maker's manual. The 72-hour emergency kit checklist lists where a power source sits among water, food and light, and a water filter is a separate need: see gravity water filters. This page reports Jackery's stated specifications and our arithmetic. We have not run the unit.
FAQ
How many watt-hours is the Jackery Explorer 300?
Jackery's page lists 293 Wh in the body, FAQ and collection page, and 292 Wh in the header. The Explorer 300 v2 and the 300D are listed at 288 Wh.
Can the Jackery Explorer 300 run a refrigerator?
Not for long, on our arithmetic. A 76 W average load gives about 3.3 hours at our 85% usable assumption. Startup draw is higher than the average, which GE's support pages put at two to three times the running draw. A larger unit is the better match for a refrigerator.
Can it run a space heater or microwave?
No. Its rated AC output is 300 W, and a 1,500 W heater or a 1,583 W microwave is over rated output.
What is the difference between the Explorer 300 and the 300D?
Jackery's 300D page describes a DC and USB charger with a stated 140 W header output and no AC outlet stated. The Explorer 300 states a 300 W AC output with two AC outlets.
Are the prices current?
They were read on 2026-11-02 during a holiday sale and may change. Check Jackery's own page before you decide.