How Long Will It Run

EcoFlow DELTA 2 vs EcoFlow RIVER Pro

EcoFlow DELTA 2 against EcoFlow RIVER Pro: specifications side by side, runtimes on five reference appliances, and a verdict assembled from the numbers rather than from an opinion.

Side by side

EcoFlow DELTA 2EcoFlow RIVER Pro
Capacity1,024 Wh720 Wh
ChemistryLFPNMC
Rated cycles3,000 to 80%800 to 80%
Inverter, continuous1,800 W600 W
Surge2,700 W1,200 W
Inverter idle draw12 W10 W
Solar input, max500 W200 W
Mains charge rate1,200 W660 W
Full mains recharge1 h 20 min1 h 36 min
Weight12 kg / 26.5 lb7.6 kg / 16.8 lb
AC outlets42
Indicative price£549 / $699—
Fridge-freezer (full size)13 h 47 min9 h 32 min
CPAP (no humidifier)17 h 43 min12 h 23 min
TV, 43 inch LED9 h 5 min6 h 12 min
Starlink (Standard dish)8 h 33 min5 h 50 min
Microwave, 1,000 W output29 min—

The verdict

The EcoFlow DELTA 2 holds 304 Wh more — 42% more capacity, which on a fridge-freezer is the difference between 9 h 32 min and 13 h 47 min.

The EcoFlow RIVER Pro is 4.4 kg lighter, which matters if you carry it rather than wheel it.

Only one of the two has an indicative price recorded, so value is not comparable here.

They use different chemistries: the EcoFlow DELTA 2 is LFP and rated for 3,000 to 80% capacity, against 800 to 80% for the NMC unit. For anything that will be charged weekly, that alone decides it.

EcoFlow DELTA 2 refills faster from the mains — 1 h 20 min against 1 h 36 min.

Short answer. Buy the EcoFlow DELTA 2 if you want the hours and can live with 12 kg; buy the EcoFlow RIVER Pro if portability matters more than capacity. Neither is a bad buy — they are aimed at different jobs.

Where to buy

EcoFlow DELTA 2

Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.

EcoFlow RIVER Pro

Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.