The Bluetti AC180 vs EcoFlow Delta 2 matchup used to be the easy answer in the 1kWh class: pick whichever one was on sale. In 2026 it takes more care, because both units are late-cycle models sitting next to newer siblings. This comparison is based on manufacturer specs and owner reports — we did not lab-test either unit. Every number below comes from Bluetti’s and EcoFlow’s spec pages as of October 2026, and the runtime figures are computed from a formula you can redo yourself.
The 2026 buying context matters. EcoFlow’s US store page for the Delta 2 now serves the Delta 3 product page, so the Delta 2 is a superseded-but-still-sold model: it lives on through EcoFlow’s global store and Amazon listings, usually discounted. Bluetti’s AC180 now shares shelf space with the newer Elite 100 V2. Neither fact makes the older units bad — it makes them deals worth checking carefully. For the brand-level view, including where the Delta 3 and AC200L fit, see our EcoFlow vs Bluetti brand comparison.
Verdict: the EcoFlow Delta 2 is the better system pick for most buyers — lighter at 27 lbs vs 35.27 lbs, faster published full charge, six AC outlets, Wi-Fi app control, and expansion up to 3,072Wh — while the Bluetti AC180 is the capacity pick at 1,152Wh vs 1,024Wh and a 3,500+ vs 3,000 cycle rating.
The 30-second verdict
| Model | Best for | Standout strength | Watch out for |
|---|---|---|---|
| EcoFlow Delta 2 | Most people: camping, apartment outages, CPAP and fridge backup | Lighter (27 lbs), 6 AC outlets, Wi-Fi app, expandable to 3,072Wh | Late-cycle; solar capped at 500W; fan noise above a few hundred watts |
| Bluetti AC180 | Buyers who want maximum runtime per box and don’t need expansion | 1,152Wh capacity and 3,500+ cycle rating at the same 1,800W class | 35.27 lbs, Bluetooth-only app, no integrated battery expansion |
Specs head to head
All figures are from manufacturer spec pages as of October 2026. Anything not published by the manufacturer is marked rather than estimated.
| Spec | Bluetti AC180 | EcoFlow Delta 2 |
|---|---|---|
| Capacity | 1,152Wh | 1,024Wh |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,500+ cycles to 80% | 3,000 cycles to 80%+ |
| AC output (rated / surge) | 1,800W / 2,700W | 1,800W / 2,700W |
| Boost mode | Power Lifting to 2,700W, resistive loads only | X-Boost to 2,200W, resistive loads only |
| AC outlets | 4 | 6 |
| USB-C | 1× 100W | 2× 100W |
| USB-A | 4 (two 15W groups) | 2× 12W + 2× 18W fast-charge |
| Other ports | 12V/10A regulated car outlet; 15W wireless pad | 12.6V/10A 126W car port; 2× DC5521 12.6V/3A |
| Outlet count | 11 total | Up to 15 devices |
| AC charge input | 1,440W Turbo (1,000W standard, 260W Silent) | 1,200W X-Stream |
| Published AC charge time | 0–80% in ~45 min; full in ~1.3–1.8h | 0–80% in 50 min; 0–100% in 80 min |
| Solar input max | 500W (12–60VDC, 10A) | 500W (11–60V, 15A) |
| Published solar full recharge | ~2.8–3.3h | 3–6h depending on panels |
| Alternator charging | Not published — check the spec sheet | 800W (1kWh in 1.3h) |
| Weight | 35.27 lbs | 27 lbs |
| Warranty | 5 years | 5 years |
| Expandable | No (B80/B230/B300 only recharge it via Power Bank Mode) | Yes — 2,048Wh with one Delta 2 extra battery, 3,072Wh with a Delta Max extra battery |
| App | Bluetooth only | Wi-Fi and Bluetooth |
Shopping: Bluetti AC180 and EcoFlow DELTA 2. Check current price on each — both move around, and the gap between them changes weekly.
Capacity and runtime
The Bluetti AC180 vs EcoFlow Delta 2 capacity gap is 128Wh on paper, which sounds trivial until you convert it to minutes. Use runtime(h) = Wh × 0.85 ÷ W, where 0.85 accounts for inverter losses. You can run your own load numbers through our watt-hour calculator if your devices don’t match these examples.
The AC180’s usable energy is 1,152 × 0.85 = 979.2Wh. The Delta 2’s is 1,024 × 0.85 = 870.4Wh. Applied to real loads:
- 150W mini fridge: about 6.5 hours on the AC180 versus about 5.8 hours on the Delta 2. More detail in our fridge backup guide.
- 50W CPAP: about 19.6 hours versus about 17.4 hours. See our CPAP picks for machine-specific notes.
- 190W essentials kit (fridge 150W + router 10W + lights 30W): about 5.2 hours versus about 4.6 hours.
- 1,000W microwave: about 59 minutes versus about 52 minutes.
The 128Wh gap translates to roughly 108.8Wh of usable energy — about 43 extra minutes on a 150W fridge or about 2.2 extra hours on a 50W CPAP. Not dramatic, but it’s real, and it compounds if you’re sizing close to your needs. If you’re unsure where you land, our guide to how many watt-hours you need walks through the sizing math.
The counterweight is expansion. The Delta 2 accepts one extra battery to reach 2,048Wh, or a Delta Max extra battery to reach 3,072Wh — verify accessory availability before you plan around it, because EcoFlow’s Canadian page notes the extra battery is no longer available there. The AC180 cannot take Bluetti’s B80, B230, or B300 as integrated capacity at all; those packs can only recharge it through Power Bank Mode, which extends runtime between charges rather than growing the battery.
Winner: Bluetti AC180 — more capacity and a longer cycle-life rating in a single box, though if you expect to grow past 1kWh, the Delta 2’s expansion path outweighs 128Wh.
Power output and surge
On paper these two are twins: 1,800W continuous and 2,700W surge. The AC180’s inverter is pure sine wave per Bluetti’s spec page; EcoFlow does not publish a waveform figure for the Delta 2, so check the spec sheet if your gear is waveform-sensitive. Neither will start a large AC compressor or a well pump, and no boost mode changes that. The difference is in the resistive-load ceilings — Bluetti’s Power Lifting mode reaches 2,700W and EcoFlow’s X-Boost reaches 2,200W. Both modes are for heating and resistive devices only, and neither adds continuous capacity. If your plan is “run a space heater or a hot plate briefly,” the AC180’s higher ceiling gives it a little more room.
Winner: Tie on paper, slight edge to the Bluetti AC180 for the higher resistive-mode ceiling.
Charging speed
This is the most misreported part of the Bluetti AC180 vs EcoFlow Delta 2 comparison, so here it is straight. The AC180 pulls more from the wall — 1,440W Turbo input versus the Delta 2’s 1,200W X-Stream — and wins the sprint to 80%: about 45 minutes versus 50 minutes. That is close to a tie. The published full-charge time is where the Delta 2 takes it: 80 minutes to 100%, versus roughly 1.3–1.8 hours on the AC180.
Solar is a genuine tie at a 500W ceiling on both. Bluetti publishes a 2.8–3.3 hour solar full recharge; EcoFlow publishes 3–6 hours depending on panel configuration. One Delta 2 owner running an expansion battery reports on r/prepping that the 500W solar ceiling is the limiting factor for that much capacity — the same critique applies to the AC180, since both share the ceiling. The Delta 2 adds 800W alternator charging, enough for 1kWh in 1.3 hours, which matters for van and overlanding builds.
Winner: EcoFlow Delta 2.
Ports
The Delta 2 packs 6 AC outlets, 2× 100W USB-C, 4 USB-A (two 12W, two 18W fast-charge), a 126W car port, and 2× DC5521 — up to 15 devices at once. The AC180 gives you 4 AC outlets, 1× 100W USB-C, 4 USB-A, a regulated 12V/10A car outlet, and a 15W wireless charging pad, for 11 outlets total.
For a family camping setup or an apartment outage where phones, laptops, a router, and a lamp all want a slot, six AC outlets is the more useful configuration. The AC180’s wireless pad is a nice touch for a phone overnight, but it doesn’t compensate for two fewer AC receptacles and half the USB-C count. If portability is the deciding factor, note the weight gap — 27 lbs versus 35.27 lbs is the difference between one-hand carry and two, which our camping power station guide covers in more depth.
Winner: EcoFlow Delta 2.
App and monitoring
The Delta 2 connects over both Wi-Fi and Bluetooth through the EcoFlow app, and owners describe it as good and consistent. The AC180 is Bluetooth-only, which means no remote monitoring when you’re out of range.
Owner reports also surface the caveats you won’t see on a spec sheet. One AC180 owner blames a firmware update for a sudden full-drain event; it’s a single report, but it’s a reason to watch behavior after updates rather than accept them blindly. On the EcoFlow side, fan noise is the recurring complaint — audible above a few hundred watts and noticeable at night while charging, plus a click when charging starts. Neither issue is disqualifying, but in a bedroom or a small apartment, the Delta 2’s fan is the thing you’ll notice.
Winner: EcoFlow Delta 2.
Warranty and value
Both carry 5-year warranties. Both brands run email-heavy support with multi-day waits between replies, according to owner reports — neither earns a “great support” label, and Bluetti in particular carries some community distrust over Reddit marketing that makes long-term owner reports more trustworthy than launch-day hype. The AC180 does sit on the recommended side of Bluetti’s lineup; the recurring community advice is to buy the AC series and skip the budget EB models.
On value, both units are late-cycle and frequently discounted, so the honest answer depends on the day. At equal pricing, the AC180 wins on the spec sheet — more watt-hours, a higher cycle-life rating, and a higher resistive-mode ceiling. When the Delta 2’s discount is deeper, the lighter chassis, extra outlets, Wi-Fi app, and expansion path more than cover the 128Wh gap.
Winner: Draw — check current price on both and let the deal decide.
Buy the Bluetti AC180 if…
- You want the most watt-hours in a single box at this output class: 1,152Wh versus 1,024Wh.
- You care about longevity ratings and want the 3,500+ cycle figure rather than 3,000.
- You’d use the higher 2,700W Power Lifting ceiling for a heater, hot plate, or kettle.
- You’re staying in one place and 35.27 lbs is not a burden.
- You don’t need remote monitoring or a Wi-Fi app.
Buy the EcoFlow Delta 2 if…
- You’ll carry it — 27 lbs versus 35.27 lbs is a real difference for camping and tailgating.
- You need six AC outlets and two 100W USB-C ports for family or roommate use.
- You want Wi-Fi app control and remote monitoring.
- You may expand later, up to 2,048Wh or 3,072Wh — verifying extra-battery availability first.
- You want 800W alternator charging for vehicle-based power.
FAQ
Is the EcoFlow Delta 2 still worth buying in 2026?
Yes, with a caveat. EcoFlow’s US store page for the Delta 2 now routes to the newer Delta 3, so the Delta 2 is a late-cycle model that is still sold through EcoFlow’s global store and on Amazon, usually at a discount. It is still a well-built, expandable 1,024Wh unit — just check current price and confirm the listing is the Delta 2 and not the Delta 3.
What is the difference between the Bluetti AC180 and AC180P?
Capacity. The AC180 is 1,152Wh and the AC180P is 1,440Wh, but they sit in the same 1,800W output class and roughly the same weight class. Every other number in this comparison — outlets, charge rates, cycle life — applies to the AC180 as listed here, so confirm which variant a listing is actually selling.
How long will each run a fridge or CPAP?
Use runtime(h) = Wh × 0.85 ÷ W. On a 150W mini fridge the AC180 runs about 6.5 hours versus about 5.8 hours for the Delta 2; on a 50W CPAP it is about 19.6 hours versus about 17.4 hours. Real results vary with duty cycle, temperature, and what else is plugged in.
Can you expand the AC180 or the Delta 2 with extra batteries?
The Delta 2 can, up to 2,048Wh with one Delta 2 extra battery or 3,072Wh with a Delta Max extra battery — but accessory availability varies by region and is no longer listed in some markets, so verify before planning around it. The AC180 is not expandable; Bluetti’s B80, B230, and B300 packs can only recharge it through Power Bank Mode, which is a charge source, not added capacity.
Frequently asked questions
Is the EcoFlow Delta 2 still worth buying in 2026?
Yes, with a caveat. EcoFlow's US store page for the Delta 2 now routes to the newer Delta 3, so the Delta 2 is a late-cycle model that is still sold through EcoFlow's global store and on Amazon, usually at a discount. It is still a well-built, expandable 1,024Wh unit — just check current price and confirm the listing is the Delta 2 and not the Delta 3.
What is the difference between the Bluetti AC180 and AC180P?
Capacity. The AC180 is 1,152Wh and the AC180P is 1,440Wh, but they sit in the same 1,800W output class and roughly the same weight class. Every other number in this comparison — outlets, charge rates, cycle life — applies to the AC180 as listed here, so confirm which variant a listing is actually selling.
How long will each run a fridge or CPAP?
Use runtime(h) = Wh × 0.85 ÷ W. On a 150W mini fridge the AC180 runs about 6.5 hours versus about 5.8 hours for the Delta 2; on a 50W CPAP it is about 19.6 hours versus about 17.4 hours. Real results vary with duty cycle, temperature, and what else is plugged in.
Can you expand the AC180 or the Delta 2 with extra batteries?
The Delta 2 can, up to 2,048Wh with one Delta 2 extra battery or 3,072Wh with a Delta Max extra battery — but accessory availability varies by region and is no longer listed in some markets, so verify before planning around it. The AC180 is not expandable; Bluetti's B80, B230, and B300 packs can only recharge it through Power Bank Mode, which is a charge source, not added capacity.