EcoFlow
DELTA 3 Ultra
3,072 Wh battery, 3,600 W output. Whole-room backup: a fridge, LED lights and a TV together for about 17 hours.
Battery
3,072 Wh
fridge about 44 hours
Output
3,600 W
7,200 W surge
Solar in
800 W
full in about 5.5 hours
Weight
72.1 lb
wheels or two people
Where to buyPrices checked Oct 27, 2026
EcoFlow store
$250 off the store's usual $1,599
Amazon
This model's Amazon page; price shown on Amazon
We may earn a commission if you buy through these links. It never changes a verdict.
What can it run, and for how long?
Tap what you would plug in. Hours assume a full battery and 15% lost to conversion.
Fridge + LED lights + Phone
33 hours
on a full charge, drawing 80 WBattery over time80 W draw
Full33 hours
Together these draw 80 W. This station puts out 3600 W. It will shut off. Remove the biggest item or run them one at a time.
Specs in plain English
Tap any underlined term for a one-sentence explanation.
Wh
3,072 WhFrom the brand's page
Enough for a 60 W fridge for about 44 hours, or a CPAP for about 3 days.Wh Watt-hours. Battery size. How much energy is stored. 1,000 Wh runs a 100W device for about 8.5 hours after losses.
W
3,600 WFrom the brand's page
Microwave, kettle, most kitchen gear.W Watts. Power right now. The station has a maximum it can put out; each appliance has a draw.
Surge
7,200 WFrom the brand's page
Short bursts for motors starting, like a fridge compressor or a pump.Surge A short burst of extra output the station can deliver for a second or two, for motors starting.
Voc
Not confirmed yet
Voc Open-circuit voltage. The highest voltage a panel makes, with nothing connected. Rises in cold.
Imp
Not confirmed yet
Imp Current at maximum power. The working current when the panel is actually charging.
MPPT
800 WFrom the brand's page
From empty to full in about 5.5 hours of good sun at 70% of rating.MPPT Maximum power point tracker. The charge controller inside the station that finds the best voltage to pull from the panels.
Solar portplug
Solar inputFrom the brand's page
The plug on the station. Panels with a different plug need an adapter cable; we list it in the checker.LiFePO4
LiFePO4From the brand's page
Long-life chemistry, suited to daily solar use. Check the manual for the exact cycle rating.LiFePO4 Lithium iron phosphate. The battery chemistry in most current stations. Rated for thousands of full cycles; check the manual for the exact number.
Weightlb
72.1 lbFrom the brand's page
Wheels or two people. Not a grab-and-go unit.Solar panels that work with it
We cannot check panels with this station yet: its solar input voltage range and current limit are not confirmed. We add the verdicts once EcoFlow's manual or product page gives the numbers.
Having a problem?
Short fixes from the manuals.
Sources
From the brand's pageEcoFlow DELTA 3 Ultra product page
Shop listing, not yet confirmedPrice, from the EcoFlow store on Oct 27, 2026 (checked every morning)
Spotted an error? Email [email protected] with the manual page number.