EcoFlow DELTA 3 vs EcoFlow DELTA 3 Classic
EcoFlow DELTA 3
EcoFlow DELTA 3 ClassicThe DELTA 3 Classic refills 24% faster from a wall socket, and that is the gap worth deciding on: it is ready again sooner between two outages. They are level on capacity, AC output and weight. Scored across this catalogue they land at 6.7 and 6.5 out of 10.
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EcoFlow DELTA 3It gives up ground on every axis large enough to measure, so take it only if it is clearly cheaper on the day or you already own the accessories.
Check price on AmazonEcoFlow DELTA 3 ClassicIt leads by 24% on wall recharge time. Those are the axes to buy it for, and the only ones.
Check price on AmazonThe specifications side by side
| Specification | DELTA 3 | DELTA 3 Classic |
|---|---|---|
| Score | 6.7/10 | 6.5/10 |
| Capacity | 1,024 Wh | 1,024 Wh |
| AC output | 1,800 W | 1,800 W |
| Surge | 3,600 W | 3,600 W |
| Cell chemistry | LFP | LFP |
| Cycle life | 4,000 cycles to 80% | Not published |
| Wall recharge | 56 minutes | 45 minutes |
| Max solar input | 500 W | 500 W |
| UPS switchover | 10 ms | 10 ms |
| Weight | 27.6 lb (12.5 kg) | 26.6 lb (12.1 kg) |
| Extra batteries | Expandable to 5,000 Wh | Not expandable |
The rows worth your attention are the ones where the gap is large enough to change a decision. On this pair that means wall recharge time. Everything else is close enough to ignore.
Where they really separate: wall recharge time
This is the one gap large enough to decide the question. The DELTA 3 Classic comes out 24% ahead on wall recharge time, and the reason that matters is practical rather than arithmetic.
During a rolling outage, mains power comes back in windows. A unit that refills inside one of those windows is ready for the next cut; one that needs most of an afternoon may still be half empty. The same logic applies to cheap overnight rates.
What each one will run
Same arithmetic for both: usable watt hours after an assumed 85% inverter efficiency, divided by average draw rather than peak.
EcoFlow DELTA 3
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 20 h 43 min |
| CPAP machine | 45 W | 19 h 21 min |
| Router and modem | 15 W | 58 h 2 min |
| Television | 90 W | 9 h 40 min |
| Microwave | 1200 W | 0 h 44 min |
EcoFlow DELTA 3 Classic
| Appliance | Typical draw | Estimated run time |
|---|---|---|
| Fridge | 120 W | 20 h 43 min |
| CPAP machine | 45 W | 19 h 21 min |
| Router and modem | 15 W | 58 h 2 min |
| Television | 90 W | 9 h 40 min |
| Microwave | 1200 W | 0 h 44 min |
For your own appliance and its real wattage, the run time calculator shows the assumptions on screen and lets you move them.
Common questions
Is the DELTA 3 or the DELTA 3 Classic better value?
This site does not print prices, because a stale price is worse than none. Check both on Amazon, then weigh the gap against the differences above. A 24% lead on wall recharge time is worth paying for only if that axis matters to your use.
Can I compare their surge ratings directly?
Not always. BLUETTI's Lifting Power and EcoFlow's X-Boost run appliances above rated output by lowering voltage, which suits a kettle or a heater but not a motor or a computer. A conventional surge rating means something else: a brief tolerance for start-up current. The table keeps each maker's own label attached.
Is the newer one simply a better version?
Not automatically. Makers revise units to hit a different price or size, and a newer model sometimes drops something the older one had. Read the table rather than the generation number.