By job

Power stations by job

Start from what you need to keep running. Each job below is sized from the device table with the same arithmetic as the calculator, then every tracked unit is checked against it: enough watt-hours, enough output, and enough surge for the start-up.

What each job needs, and our pick
Job	Needs	Start-up	Units that clear it	Our pick
Home backup · a day of home backup	2,323 Wh	1,351 W	16 of 56	OUPES Mega 3 · $1,199, 83.3 lb
CPAP · a night of CPAP	599 Wh	104 W	46 of 56	EcoFlow RIVER 2 Pro · $349, 18.2 lb
Camping · two nights of camping	2,066 Wh	157 W	19 of 56	BLUETTI Elite 200 V2 · $849, 53.4 lb
RV · a day in an RV	648 Wh	156 W	46 of 56	BLUETTI Elite 100 V2 · $489, 25 lb
Van life · a working day in a van	2,295 Wh	244 W	16 of 56	Anker SOLIX F3000 · $1,299.99, 91.5 lb

Choose your job

Keep the fridge cold in an outageSized for an outage: a full-size refrigerator for a day, a router, phone charging and lights, with the compressor surge checked.OUPES Mega 3
Run a CPAP through the nightSized for one 8-hour night with the heated humidifier on, which is the draw that decides everything.EcoFlow RIVER 2 Pro
Power a weekend of campingTwo nights: a 12 V compressor cooler, camp lights, phone charging, a laptop and a fan.BLUETTI Elite 200 V2
Run the RV off the gridA day of the loads an RV runs off shore power: the 12 V fridge, lights, water pump, TV, coffee maker, phones and laptop.BLUETTI Elite 100 V2
Work from the vanA day working from the van: laptop, phone, Starlink or a router, the fridge, lights and a fan, then how much solar input the unit needs to replace that day by evening.Anker SOLIX F3000
Size a battery for your refrigeratorThe average-watts sum, the compressor surge check, and the units that clear one, two and three days.
Recharge from the sunWhat the panel adds, and the input limit that sets how fast the sun refills each unit.

Your own load

None of these is quite yours? The watt-hour calculator takes any mix of devices, hours and days, and lists every unit that fits it.