Anker SOLIX C1000 vs EcoFlow DELTA 3

Side-by-side on the specs that decide it — surge, capacity, runtime and price.

Both models' specs verified against manufacturer listings · Last updated July 29, 2026

The short answer

EcoFlow DELTA 3 costs $350 less. Whether that gap is worth closing depends on what you need to run.

Anker SOLIX C1000 holds 3% more energy (1056Wh vs 1024Wh), so it runs the same load proportionally longer.
EcoFlow DELTA 3 has 1200W more surge headroom (3600W vs 2400W) — that decides whether a fridge, pump or AC compressor will actually start.
Anker SOLIX C1000 is 0.3 lb lighter (28.44 lb vs 28.7 lb).
EcoFlow DELTA 3 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.

Anker SOLIX C1000

The default recommendation for most people. It clears the 1kWh bar, recharges in under an hour, and undercuts almost everything with comparable specs.

Best for: First-time buyers who want one unit for camping and short outages without overpaying.

Where it falls short:

2400W surge won't start a sump pump or well pump
Only 1056Wh — a fridge-plus-devices outage tops out around a day

EcoFlow DELTA 3

The 1kWh class got a serious upgrade here. 3600W surge at $649 beats the older DELTA 2 on every axis that matters.

Best for: Anyone about to buy a DELTA 2 — this is the same money for materially better specs.

Where it falls short:

Still only 1024Wh
Solar input unchanged at 500W

Spec	Anker SOLIX C1000	EcoFlow DELTA 3
Price	$999	$649
Capacity	1056 Wh	1024 Wh
Continuous output	1800 W	1800 W
Surge output	2400 W	3600 W
Battery	LiFePO4	LiFePO4
Rated cycles	3,000	4,000
Weight (lighter wins)	28.44 lb	28.7 lb
Max solar	600 W	500 W
Recharge time (faster wins)	58 min	56 min

Runtime head-to-head

Appliance	Anker SOLIX C1000	EcoFlow DELTA 3
Refrigerator	15.0 hrs	14.5 hrs
Mini fridge	28.5 hrs	27.6 hrs
Chest freezer	11.2 hrs	10.9 hrs
CPAP machine	22.4 hrs	21.8 hrs
Sump pump	❌	1.1 hrs

Anker SOLIX C1000
Price → EcoFlow DELTA 3
Price →