Bluetti AC180P vs EcoFlow DELTA 3 Plus: manufacturer-published specifications compared

Bluetti AC180P vs EcoFlow DELTA 3 Plus: cheaper per watt-hour vs longer cycle rating

by

Specifications checked against manufacturer pages on 2026-08-23.

The Bluetti AC180P (1,440 Wh, 1,800 W) and the EcoFlow DELTA 3 Plus (1,024 Wh, 1,800 W), compared on the figures their makers publish. On the normalized ratios, the AC180P costs less per watt-hour ($0.45/Wh vs $0.78/Wh); the DELTA 3 Plus is rated for more cycles (4,000 vs 3,500).

In short. The AC180P leads on cost per watt-hour ($0.45/Wh vs $0.78/Wh), watt-hours per pound (40.8 Wh/lb vs 37.1 Wh/lb) and continuous watts per dollar (2.77 W/$ vs 2.25 W/$). The DELTA 3 Plus leads on rated cycle life (4,000 vs 3,500). 2 of 6 measures tie or are not comparable. Note: the AC180P is listed as discontinued at the manufacturer; the price used here is its last list price.

Disclosure: This page contains affiliate links. If you click through and make a purchase, CalmWatt may earn a commission at no extra cost to you. As an Amazon Associate, CalmWatt earns from qualifying purchases. Prices and availability on Amazon change; we do not show them here.

Check the current price

EcoFlow DELTA 3 PlusEcoFlow DELTA 3 Plus on Amazon

Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.

We do not link the AC180P: we could not confirm a listing for the exact base unit, and we do not link a guess.

Specifications, side by side

Numbered notes below the table give the source location or a caveat for figures that need one; check marks mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of its check date listed under Sources. UPS switchover is how long the outlets go dark when grid power drops.

Specification Bluetti AC180P EcoFlow DELTA 3 Plus
Rated capacity 1,440 Wh1 ✓ 1,024 Wh2
Usable capacity (calculated)* 1224–1296 Wh 870–922 Wh
Continuous AC output 1,800 W3 1,800 W4
Surge output No conventional surge stated (2,700 W boost mode)5 3,600 W6
Full recharge from wall 78–108 min7 56 min8
Cell chemistry LiFePO49 LiFePO410
Rated cycle life 3,500+ cycles to 80%11,12 4,000 cycles to 80%13 ✓
UPS switchover Manufacturer does not state <10 ms14
Expandable No15 Yes, up to 5,000 Wh16
Max solar input 500 W17 1,000 W18 ✓
Max AC charging input 1,440 W19 1,500 W20 ✓
AC outlets 421 622 ✓
Highest USB-C port 100 W23 140 W24 ✓
App control Yes25 Yes26
Stated noise 45 dB27 <30 dB28
Warranty 5 years29 5 years30
Weight 35.27 lb31 about 27.6 lb32 ✓
Manufacturer list price when checked $64933 ✓ $79934

* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.

Notes on the figures

  1. AC180P, rated capacity: From Tech Specs > BATTERY INFO. Headline bullet also says “1,440Wh Larger Capacity*”; comparison table column for AC180P says 1440Wh.
  2. DELTA 3 Plus, rated capacity: 1024Wh
  3. AC180P, continuous output: From Tech Specs > OUTPUT. Headline bullet: “1,800W AC Output / 2,700W Power Lifting Mode”. Discharging temperature line adds a derate: 86°F-104°F: 1,500W Max.
  4. DELTA 3 Plus, continuous output: 1800W
  5. AC180P, surge: The spec table labels this “Surge Power”, but the same 2,700W figure is marketed as “Power Lifting Mode” for resistive heating loads (FAQ Q1: “AC180P can run high-power heating devices up to 2,700W … Do NOT use this unit to run an air conditioner or washing machine.”). Treat as a boost mode for resistive loads, not a conventional motor-start surge rating.
  6. DELTA 3 Plus, surge: EcoFlow’s X-Boost raises sustained output to 2,200 W for resistive loads; 3,600 W is the surge figure. The two are different things.
  7. AC180P, full recharge: Upper bound of the stated full-charge range (≈1.3-1.8 hours = ≈78-108 min) in Turbo Charging mode (1,440W, enabled via the BLUETTI App). FAQ Q5 on the same page gives a different range: “you can fill it up in only 1.5-2 hours”. The 0-80% figure is stated separately: “0-80% Recharging in 45Mins with 1,440W AC Input”. Standard mode (around 1,000W) is 1.7-2.2 hrs; Silent mode (260W) 4.9-5.4 hrs per FAQ Q6.
  8. DELTA 3 Plus, full recharge: With the 1,500 W AC input setting.
  9. AC180P, cell chemistry: From Tech Specs > BATTERY INFO.
  10. DELTA 3 Plus, cell chemistry: Third-gen LiFePO4 (LFP) cells offer fast charging without sacrificing longevity.
  11. AC180P, cycle life: Stated as “3,500+”, i.e. a minimum; 3,500 is the floor.
  12. AC180P, cycle life: Life Cycles: 3,500+ Cycles to 80% Original Capacity
  13. DELTA 3 Plus, cycle life: With 4000 cycles to 80% capacity, enjoy up to 10 years of reliable use, 25% above the industry standard.
  14. DELTA 3 Plus, UPS switchover: Stated as under 10 ms; an upper bound.
  15. AC180P, expandable: FAQ Q13. The marketing paragraph “Get your AC180P charged via expansion batteries – B80 (806Wh), B230 (2048Wh), and B300 (3072Wh) – to ensure a continuous power source of up to 4,224Wh” describes using those batteries as a charging source, not a combined expandable system.
  16. DELTA 3 Plus, expandable: up to 5kWh expandable
  17. AC180P, solar input: From Tech Specs > INPUT. FAQ Q8 repeats: Total open circuit voltage 12-60V, Max. input power 500W, MC4 connectors.
  18. DELTA 3 Plus, solar input: 2 ports, DC Charge Input, 11V-60V 500W Max*2
  19. AC180P, AC input: Turbo Mode figure (Tech Specs > INPUT; also “Max Input: 1,440W”). Standard Mode is “1000W Max.”; Turbo is switched on in the BLUETTI App per FAQ Q5.
  20. DELTA 3 Plus, AC input: 1500W
  21. AC180P, AC outlets: From Tech Specs > OUTPUT. Comparison table: “4x120V(1800W Total)”.
  22. DELTA 3 Plus, AC outlets: 6 outlets, 1800W total (Surge 3600W)
  23. AC180P, USB-C: Single USB-C port. Other ports: 4 x USB-A (two pairs at 15W in total each), 1 x 12V/10A car outlet, 1 x 15W wireless charging pad.
  24. DELTA 3 Plus, USB-C: 2 ports, 140W Max
  25. AC180P, app: Bluetooth only; comparison table lists “BLUETTI App (Bluetooth)”. The page does not claim Wi-Fi.
  26. DELTA 3 Plus, app: APP (TOU / Storm Warning Alert)
  27. AC180P, noise: FAQ Q6. Applies only to the Silent (260W) charging mode; the manufacturer states no noise figure for normal operation or Turbo charging.
  28. DELTA 3 Plus, noise: Stated as under 30 dB at 600 W output and under 40 dB at 1,200 W; an upper bound at a stated load.
  29. AC180P, warranty: From Tech Specs > GENERAL; page header also says “5-year Hassle Free Warranty”.
  30. DELTA 3 Plus, warranty: 5 years
  31. AC180P, weight: From Tech Specs > GENERAL. The comparison table rounds this to “35.3 lbs”; the description says “weighs about 35.27lbs/16kg”.
  32. DELTA 3 Plus, weight: Manufacturer states ‘approx.’
  33. AC180P, price: Manufacturer price for the base variant “AC180P | 1800W,1440Wh,Power Station”. All variants were marked ” – sold out – ” at check time. Bundle prices: AC180P+200W Solar US$899.00; AC180P+350W Solar US$1,199.00; AC180P+Charger 1 US$799.00.
  34. DELTA 3 Plus, price: Manufacturer list price when checked; on sale at $669 that day.

The same specs, normalized

Ratios, so the bigger unit does not win by default.

Measure AC180P DELTA 3 Plus
Cost per watt-hour $0.45/Wh ✓ $0.78/Wh
Watt-hours per pound 40.8 Wh/lb ✓ 37.1 Wh/lb
Surge headroom Not comparable — the AC180P figure is a boost-mode rating, not a motor-start surge.
Recharge rate ≥13.3 Wh/min 18.3 Wh/min
Rated cycle life 3,500 4,000 ✓
Continuous watts per dollar 2.77 W/$ ✓ 2.25 W/$

Definitions and direction of each ratio: How we verify. A recharge rate marked ≥ is computed from an upper-bound recharge time, so the true rate is at least that figure; no check mark on that row.

What each one runs, for how long

Appliance AC180P DELTA 3 Plus
Full-size refrigerator
150 W, 900 W start, 35% duty · eff. 80%–87%		 22–24 hr 16–17 hr
Mini fridge
70 W, 400 W start, 30% duty · eff. 70%–82%		 2.0–2.3 days 34–40 hr
CPAP without humidifier
40 W · eff. 70%–82%		 25–30 hr 18–21 hr
CPAP with heated humidifier
95 W · eff. 80%–87%		 12–13 hr 8.6–9.4 hr
Gas furnace blower
400 W, 1600 W start, 40% duty · eff. 85%–90%		 7.7–8.1 hr 5.4–5.8 hr
1/3 hp sump pump
500 W, 1800 W start, 15% duty · eff. 85%–90%		 16–17 hr (start-up not assessed) about 12 hr
Router and modem
20 W · eff. 70%–82%		 2.1–2.5 days 36–42 hr
Laptop
60 W · eff. 70%–82%		 17–20 hr 12–14 hr
1500W space heater
1500 W · eff. 82%–88%		 about 0.8 hr about 0.6 hr

Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating. “Start-up not assessed” appears where the start-up draw meets or exceeds the unit’s continuous rating and the unit states no conventional motor-start surge to check it against (AC180P); the hours assume the motor starts.

What the differences mean

Price per watt-hour. At the list prices we checked, the AC180P costs $0.45/Wh against $0.78/Wh for the DELTA 3 Plus. At list the AC180P is $150 cheaper ($649 vs $799) for 1,440 Wh vs 1,024 Wh. Prices move with sales; the ratio moves with them. Note: the AC180P is listed as discontinued at the manufacturer; its figure here is the last list price shown.

Weight for the capacity. The AC180P carries 40.8 Wh/lb against 37.1 Wh/lb for the DELTA 3 Plus. Both are two-hands-and-a-flat-surface units; the difference matters if the unit moves between car, porch and basement.

Cycle rating. The DELTA 3 Plus is rated for 4,000 cycles against 3,500 for the AC180P, both to the same remaining-capacity threshold — otherwise we would not compare them. At one full cycle a week the difference is measured in years, not months; at occasional outage use neither limit is reached.

Output for the money. 2.77 W/$ on the AC180P against 2.25 W/$ on the DELTA 3 Plus: this is the ratio to read if your outage plan is one big appliance, not many small ones.

Which one, and for whom

On normalized measures the AC180P leads on cost per watt-hour ($0.45/Wh vs $0.78/Wh), watt-hours per pound (40.8 Wh/lb vs 37.1 Wh/lb) and continuous watts per dollar (2.77 W/$ vs 2.25 W/$). The DELTA 3 Plus answers on rated cycle life (4,000 vs 3,500). The deciding figure is the one your own outage will test first:

  • CPAP overnight. Switchover: AC180P no UPS figure stated, DELTA 3 Plus under 10 ms. A 40 W CPAP runs roughly 25–30 hr on the AC180P and 18–21 hr on the DELTA 3 Plus. Both run the night; the AC180P states no UPS figure, which matters more overnight than the hour difference.
  • Keeping a refrigerator cold. The compressor has to start before hours matter. The AC180P states a boost figure rather than a motor-start surge rating; the DELTA 3 Plus states a 3,600 W surge rating. A full-size refrigerator needs about 900 W to start.
  • A multi-day outage with a generator or solar to recharge from. Full recharge: AC180P a stated 78–108 min range, DELTA 3 Plus 56 min. The AC180P figure is an upper bound, not a measured time, so the two cannot be ranked from published numbers.

Check the current price

EcoFlow DELTA 3 PlusEcoFlow DELTA 3 Plus on Amazon

Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.

We do not link the AC180P: we could not confirm a listing for the exact base unit, and we do not link a guess.

Related reading

A 1,024–1,440 Wh battery cannot do what a gasoline generator does — the runtime table shows a 1,500 W space heater emptying either unit in 0.6–0.8 hr — but it also cannot poison a household. How often gasoline generators kill indoors — and how the official count keeps being revised — is documented in our CPSC revision matrix, and this page puts every verified unit on the same refrigerator scenario.

Ordering before a storm? Check the arrival date at checkout — a unit that ships tomorrow can beat a better one that ships next week. Amazon Prime includes fast delivery on eligible items and starts with a free trial; we earn a commission if you join.

Sources and method

Published specifications only; no bench tests. Method: How we verify. More: Comparisons.