Anker SOLIX S2000 vs EcoFlow DELTA 2 Max: Which to Buy

The EcoFlow DELTA 2 Max and the Anker SOLIX S2000 are evenly matched, rated 4.1 and 4.1. The EcoFlow DELTA 2 Max leads on AC output, solar input and charging speed. The Anker SOLIX S2000 wins on value, tested capacity and portability. The Anker SOLIX S2000 costs $349.01 less ($699.99 vs $1,049).

Higher rated

EcoFlow DELTA 2 Max

#9 in Large4.1Full review

A proven 2kWh LiFePO4 station for home backup and RV trips with plenty of outlets. It costs less than the DELTA 3 Max Plus but has slower switchover and less output.

Amazon $1,049

$1,049

Anker SOLIX S2000

#12 in Large4.1Full review

For home backup of a fridge, router and small appliances where a compact, long-lived battery matters more than high output or solar charging speed.

Amazon $699.99 Anker SOLIX $699.99

$699.99

Prices were last checked October 24, 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 2 Max for AC output (2,400 W continuous AC vs 1,500 W continuous AC), solar input (1,000 W max solar input vs 400 W max solar input) and charging speed (0-100% on AC in 1 h 20 min vs 0-100% on AC in 1 h 47 min).
Choose the Anker SOLIX S2000 for value ($0.35 per rated Wh vs $0.51 per rated Wh), tested capacity (91% of rated capacity delivered (1 test) vs 88% of rated capacity delivered (1 test)) and portability (124 Wh per kg (35.7 lb (16.2 kg)) vs 89 Wh per kg (50 lb (23 kg))).

Scores side by side

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

Factor weight	EcoFlow DELTA 2 Max	Anker SOLIX S2000
Overall rating	4.1/5	4.1/5
Value 25%	67 $0.51 per rated Wh	93 $0.35 per rated Wh
Tested capacity 15%	81 88% of rated capacity delivered (1 test)	95 91% of rated capacity delivered (1 test)
Battery life 15%	91 LiFePO4, 3,000 cycles, 5-year warranty	100 LiFePO4, 6,000 cycles, 5-year warranty
AC output 15%	54 2,400 W continuous AC	0 1,500 W continuous AC
Charging speed 10%	84 0-100% on AC in 1 h 20 min	70 0-100% on AC in 1 h 47 min
Portability 10%	80 89 Wh per kg (50 lb (23 kg))	100 124 Wh per kg (35.7 lb (16.2 kg))
Solar input 5%	40 1,000 W max solar input	6 400 W max solar input
Features 5%	100 UPS (30 ms), expandable, 100 W USB-C, app	75 UPS (10 ms), 100 W USB-C, app

Independent capacity tests

EcoFlow DELTA 2 Max

Tested by	Usable AC energy	Of rated	Conditions
StorageReview	1,800 Wh	88%	AC discharge at a 350W load. Recharge took 2,370 Wh from the wall.