Head to head
EcoFlow DELTA 3 Classic vs EcoFlow DELTA 3 Plus
EcoFlow · Power Station
EcoFlow DELTA 3 Classic
~$599
1,800 W / 3,600 W surge · up to lights, phones, router, a CPAP
EcoFlow · Power Station
EcoFlow DELTA 3 Plus
~$649
1,800 W / 3,600 W surge · up to lights, phones, router, a CPAP
Quick takeThe EcoFlow DELTA 3 Classic lists about $50 lower.
| Spec | EcoFlow DELTA 3 Classic | EcoFlow DELTA 3 Plus |
|---|---|---|
| Approx. price | ~$599 | ~$649 |
| Type | Power Station | Power Station |
| Fuel | Battery (LiFePO4) | Battery (LiFePO4) |
| Running / output watts | 1,800 W | 1,800 W |
| Starting / surge watts | 3,600 W | 3,600 W |
| Battery capacity | 1,024 Wh | 1,024 Wh |
| Expandable to | 5,000 Wh | 5,000 Wh |
| Noise | 30 dB | 30 dB |
| Runtime | Fridge (~150W): ~6 hrs on base unit (noise figure is at 600W load) | Fridge (~150W): ~6 hrs on base unit |
| Outlets | 3x 120V AC (two 20A, one 15A), 1x 100W USB-C, 1x 30W USB-C, 1x 18W USB-A | 6x 120V 20A AC, 2x 140W USB-C, 2x USB-A, 12V car |
| Fuel tank | — | — |
| Weight | 26.7 lbs | 27.6 lbs |
| Transfer-switch ready | No | No |
| Warranty | 3-year standard, 5-year with app registration | 5-year |
Highlighted cell is the better figure for that row.
Owner pros and cons
EcoFlow DELTA 3 Classic
- +10ms auto-switch lets it act as a UPS for NAS boxes and routers
- +X-Boost carries resistive loads to 2,600W, enough for a kettle or small space heater
- +500W solar input accepts a wide voltage range
- +LiFePO4 cells, 10-year design life claimed
- +Cheaper than the Plus at the same capacity and inverter size
- −Only three AC outlets, so a power strip is almost mandatory
- −USB-C ports are 100W and 30W, below the Plus
- −Fan is audible during fast charging; the 30dB figure only holds at 600W load
- −Extra batteries are priced close to a second unit
- −Account-based app needed for the full feature set
EcoFlow DELTA 3 Plus
- +10ms UPS switchover; owners run routers, 3D printers and workstations on it
- +0-100% AC charge in ~56 minutes, fastest in class alongside Anker
- +6 AC outlets plus dual 140W USB-C - no fighting over ports
- +LiFePO4 rated ~4,000 cycles, fine to cycle daily for a decade
- +Frequent $599-649 street pricing makes it the value benchmark
- +Dual 500W solar input with high voltage tolerance for easy panel matching
- −1800W inverter is now behind Anker's 2000W at the same price
- −App requires cloud account; occasional firmware nags
- −Extra battery pricing makes expansion math unattractive versus buying bigger upfront