Jackery Explorer 300: Runtime & Specs

By Hicham M. · Specs from Jackery's published documents, as of September 2026 · How we calculate

The Jackery Explorer 300 is a 293 Wh NMC lithium-ion power station with 300 W of continuous AC output and a 500 W surge rating.

Capacity293 WhNMC lithium-ion

Output300 W500 W surge

Solar input—12–30 V

Weight7.1 lbnot expandable

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How long will the Explorer 300 run your appliances?

Nonstop runtime for one device at a time, using typical US wattages and 85% inverter efficiency. Devices marked ✕ can't run on this model.

Estimated runtime by appliance for the Jackery Explorer 300
Device	Avg draw	Runtime
LED light bulb	9 W	28 hours
Phone charging	10 W	26 hours
Wi-Fi router + modem	15 W	17 hours
Laptop	50 W	5 hours
CPAP (no humidifier)	30 W	8.3 hours
CPAP with heated humidifier	60 W	4.2 hours
Starlink Standard	90 W	2.8 hours
TV	100 W	2.5 hours
Mini fridge	29 W	8.6 hours
Refrigerator	58 W	Can’t start it
Chest freezer	29 W	Can’t start it
Sump pump (1/3 HP)	160 W	Not enough output
Sump pump (1/2 HP)	210 W	Not enough output
Window AC	225 W	Not enough output
Drip coffee maker	1,000 W	Not enough output
Microwave	1,500 W	Not enough output
Space heater	750 W	Not enough output
Well pump	33 W	Needs 240 V

Fridges, freezers, pumps and AC units cycle on and off, so we use their average draw. Want a mix of devices on a schedule? Use the runtime calculator.

What the Explorer 300 can't power

Refrigerator (full-size, ENERGY STAR): needs about 1,200 W to start
Refrigerator (older full-size, 1990s–early 2000s): needs about 1,600 W to start
Chest freezer (7–15 cu ft): needs about 800 W to start
Upright freezer (frost-free, 13–20 cu ft): needs about 1,000 W to start
Microwave (1,000 W cooking power): needs 1,500 W running
Drip coffee maker (10–12 cup): needs 1,000 W running
Electric kettle (1.7 L): needs 1,500 W running
Toaster (2–4 slice): needs 1,000 W running
Induction burner (single, portable): needs 1,500 W running
Electric pressure cooker (6 qt, Instant Pot type): needs 1,000 W running
Blender (countertop): needs 400 W running
Rice cooker (5.5–6 cup): needs 600 W running
Window AC (5,000 BTU): needs 450 W running
Window AC (8,000 BTU): needs 700 W running
Space heater (portable, 1,500 W): needs 1,500 W running
Dehumidifier (50-pint): needs 490 W running
Gas furnace blower fan: needs 600 W running
Oxygen concentrator (home, 5 L/min): needs 310 W running
Sump pump (1/3 HP): needs 800 W running
Sump pump (1/2 HP): needs 1,050 W running
Well pump (1/2 HP submersible): needs 240 V
Washing machine: needs 500 W running
Garage door opener: needs 720 W running
Circular saw (7-1/4 in.): needs 1,400 W running
EV Level 1 charging (120 V, 12 A): needs 1,440 W running

Solar charging time

Hours of good sun to charge from empty, assuming panels deliver 75% of their rating.

Panels	Power in	Hours of sun
100 W of panels	75 W	3.9 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity	293 Wh
Battery chemistry	Lithium-ion (NMC)
Continuous AC output	300 W
Surge (peak) output	500 W
Boost mode	None listed
AC voltage	120V
AC outlets	2
USB-C ports	1 (up to 60 W)
USB-A ports	2
12 V car outlet	Yes
Max solar input	—
Solar voltage range	12–30 V
Solar max current	7.2 A
Max AC charging power	90 W
AC charging time (maker claim)	0–100% in ~4.5 hr (90W AC adapter); ~2.5 hr with AC + 60W USB-C together
Expandable	No
UPS / EPS switchover	Not listed
Cycle life	800 cycles (to 80%)
Weight	7.1 lb
Warranty	2 years

Notes: The original Explorer 300, not the 300 Plus or 300 v2. Pure sine wave AC. Manual lists 293.8Wh and says not to use it as a UPS. DC input 12–23V at 7.2A or 23–30V at 3.75A; no max solar wattage is published.

Specs from Jackery's published documents, as of September 2026. Found an error? Tell us.

Sources

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Questions

How long will the Jackery Explorer 300 run a refrigerator?

It may not: a typical fridge compressor needs about 1,200 W for a moment to start, above this model's 500 W surge rating. Newer, smaller fridges may start fine.

Can the Jackery Explorer 300 run a microwave?

Not a full-size one. A typical 1,000 W microwave pulls about 1,500 W from the outlet, more than its 300 W continuous output.

How long does the Jackery Explorer 300 take to charge?

Jackery's published charging claim: “0–100% in ~4.5 hr (90W AC adapter); ~2.5 hr with AC + 60W USB-C together”. Max AC charging power is 90 W.

Is the Jackery Explorer 300 expandable?

No. Its capacity is fixed at 293 Wh.