EcoFlow DELTA 3 Classic

Name: EcoFlow DELTA 3 Classic
Brand: EcoFlow

Ranked #4 of 9 in Best 1000Wh Portable Power Stations (700–1,500 Wh) for 2026. Here is every spec we scored, where it came from, and how it compares.

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EcoFlow DELTA 3 Classic

Best for: A 1,800 W, 1 kWh station with 10 ms UPS

5.9/10

What we like

1,800 W output with X-Boost up to 2,600 W
10 ms UPS
500 W solar input

Watch out for

EcoFlow's spec table doesn't list a cycle rating or surge figure

Score breakdown

Battery capacity 29%

Continuous AC output 24%

Max solar input 18%

Weight 18%

Max AC charging power 12%

Battery capacity	1024 Wh
Continuous AC output	1800 W
Max solar input	500 W
Weight	12.1 kg
Max AC charging power	1400 W
Rated cycle life	Not listed
Surge / peak output	Not listed
Capacity	1,024 Wh (51.2 V, 20 Ah)
Chemistry	LFP (LiFePO4)
AC output	1,800 W total (X-Boost 2,600 W)
AC input	1,400 W max
Solar input	500 W max
USB-C	100 W + 30 W
UPS	10 ms
Weight	12.1 kg + 0.3 kg (EcoFlow listing)
Warranty	5 years (3 + 2 with app registration)
Price	Check price