Anker SOLIX F3800 vs EcoFlow DELTA Pro 3: Specs, Tests & Which to Buy

The EcoFlow DELTA Pro 3 is the better portable power station overall, rated 3.8 to 3.7. The EcoFlow DELTA Pro 3 leads on tested capacity, portability and battery life. The Anker SOLIX F3800 wins on AC output and value. The Anker SOLIX F3800 costs $599.01 less ($2,199.99 vs $2,799).

Higher rated

EcoFlow DELTA Pro 3

#15 in Home backup3.8Full review

For households that want a single wheeled unit able to back up 240V circuits and expand toward whole-home capacity.

Amazon $2,799 EcoFlow $2,799

$2,799

Anker SOLIX F3800

#22 in Home backup3.7Full review

For homeowners who want 240V backup that can grow into a whole-home battery, and who do not need the extra solar input of the F3800 Plus.

Amazon Anker $2,199.99

$2,199.99

Prices were last checked October 20, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Choose the EcoFlow DELTA Pro 3 for tested capacity (93% of rated capacity delivered (1 test) vs 78% of rated capacity delivered (1 test)), portability (80 Wh per kg (113.5 lb (51.5 kg)) vs 64 Wh per kg (132.3 lb (60 kg))) and battery life (LiFePO4, 4,000 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 5-year warranty).
Choose the Anker SOLIX F3800 for AC output (6,000 W continuous AC vs 4,000 W continuous AC) and value ($0.57 per rated Wh vs $0.68 per rated Wh).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every home backup portable power station; a clear win is highlighted. How we rank explains each one.

Factor weight	EcoFlow DELTA Pro 3	Anker SOLIX F3800
Overall rating	3.8/5	3.7/5
Value 25%	41 $0.68 per rated Wh	58 $0.57 per rated Wh
Tested capacity 15%	100 93% of rated capacity delivered (1 test)	35 78% of rated capacity delivered (1 test)
Battery life 15%	100 LiFePO4, 4,000 cycles, 5-year warranty	91 LiFePO4, 3,000 cycles, 5-year warranty
AC output 15%	46 4,000 W continuous AC	83 6,000 W continuous AC
Charging speed 10%	50 full AC charge time not published (neutral score used)	50 full AC charge time not published (neutral score used)
Portability 10%	63 80 Wh per kg (113.5 lb (51.5 kg))	35 64 Wh per kg (132.3 lb (60 kg))
Solar input 5%	57 2,600 W max solar input	56 2,400 W max solar input
Features 5%	100 UPS (10 ms), expandable, 100 W USB-C, app	100 UPS (20 ms), expandable, 100 W USB-C, app

Independent capacity tests

EcoFlow DELTA Pro 3

Tested by	Usable AC energy	Of rated	Conditions
OutdoorGearLab	3,790 Wh	92.5%	Full-discharge AC test; OutdoorGearLab states over 93%, 3790/4096 works out to 92.5%. Recharged from empty in about 3.2 h at about 1600W peak.