Generational sibling rivalry with a clear dividing line: the Pro 3 adds single-unit 240V output, more capacity (4.1 vs 3.6kWh), more output (4,000 vs 3,600W), faster solar, and true UPS switchover. The original's answer is price — it sells in the $1,500s regularly, a 40% discount for giving up features many homes never use. Need 240V or UPS behavior? Pro 3. Otherwise the original is the smarter check to write.

Pick the EcoFlow if…

✓240V loads: well pump, transfer-switch integration
✓UPS-grade switchover for computers and medical gear
✓Maximum solar input (2,600W) for off-grid ambitions

Pick the EcoFlow if…

✓Sale pricing makes it the category's value king
✓120V essentials backup is the whole mission
✓You'd rather put the savings toward solar panels

Spec by spec

Spec	EcoFlow DELTA Pro 3	EcoFlow DELTA Pro
Our score	9.2 / 10	9.0 / 10
Capacity	4,096Wh (LFP, expandable)	3,600Wh (LFP, expandable to 25kWh)
AC output	4,000W continuous, 120/240V dual voltage	3,600W continuous / 7,200W surge
Outlets	Multiple AC incl. 240V, USB-C, 12V	5× AC incl. 30A, USB-C 100W, 12V
Solar input	Up to 2,600W	Up to 1,600W
UPS switchover	<20 ms	—
Cycle life	4,000 cycles to 80%	6,500 cycles to 50% / 3,500 to 80%
Weight	~115 lb	99 lb
Warranty	5 years	5 years
Wall charge	—	0–80% in ~1 hr

Still deciding?

Read the full reviews for the complete story, or check both current prices — sale pricing swings this class of decision all the time.

~$2,399 typical price

Buy on Amazon

~$2,699 typical price

Buy on Amazon