Watt Math

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Jackery Explorer 300 v2

$299, or $1.04 per watt-hour.

This model replaced the Explorer 300 Plus. Jackery rates its 4,000 cycles to 70% capacity, not 80%.

Check price

Capacity
288Wh
AC output
300W, 120V
Weight
8.2 lb
Battery life
4,000 cycles
Wall charging
1 hr to 80%
Max solar input
Not listed
UPS switchover
10 ms or less
Fastest USB-C port
100W
12V DC output
120W
Expandable
No

Jackery's page does not give a maximum solar input in watts. Specs and price are from Jackery's own site, checked 2026-10-04.

What it can run, and for how long

DeviceRuntimeIf it cannot, why
CPAP, humidifier off0.8 nights
CPAP with heated humidifier0.4 nights
Mini fridge9.3 hr
Full-size refrigeratorCan't start itstartup surge of 1,200W is over its 600W limit
Chest freezer8.2 hr
12V compressor fridge0.7 days
1/3 HP sump pumpCan't run itneeds 800W, outlet tops out at 300W
Wi-Fi router and modem12.2 hr
Starlink Mini8.6 hr
Starlink Standard dish and router2.9 hr
Gas furnace blowerCan't run itneeds 600W, outlet tops out at 300W
5,000 BTU window air conditionerCan't run itneeds 450W, outlet tops out at 300W
Space heater on high (1,500W)Can't run itneeds 1,500W, outlet tops out at 300W
Space heater on low (750W)Can't run itneeds 750W, outlet tops out at 300W
Electric blanket0.5 nights
Drip coffee makerCan't run itneeds 1,000W, outlet tops out at 300W
MicrowaveCan't run itneeds 1,500W, outlet tops out at 300W
Laptop3 full charges
15-amp circular sawCan't run itneeds 1,400W, outlet tops out at 300W
Diesel air heater1.3 nights
Outage essentials (fridge, internet, lights, phones)Can't start itstartup surge of 1,200W is over its 600W limit
BiPAP, humidifier off0.5 nights
Home oxygen concentratorCan't run itneeds 350W, outlet tops out at 300W
Electric kettleCan't run itneeds 1,500W, outlet tops out at 300W
Air fryerCan't run itneeds 1,500W, outlet tops out at 300W
Slow cooker on low1.4 hr
Thermoelectric cooler5.2 hr
Tent camping essentials0.9 days
Portable tent air conditioner1.0 hr
Pancake air compressorCan't run itneeds 1,250W, outlet tops out at 300W
Cordless tool battery charger2 5Ah packs
12V roof vent fan0.5 days
13,500 BTU RV air conditionerCan't run itneeds 1,400W, outlet tops out at 300W
Whole house, average useCan't run itneeds a 240V output, this model is 120V only
Gaming PC and monitorCan't run itneeds 450W, outlet tops out at 300W
Desktop 3D printer1.6 hr
Drone battery charging2 77Wh drone batteries
E-bike charging0 500Wh e-bike charges
Tailgate setupCan't start itstartup surge of 1,000W is over its 600W limit
240V well pumpCan't run itneeds a 240V output, this model is 120V only
Aquarium filter and heater3.1 hr

Calculated from capacity and typical device draw. See the method

Guides that recommend it