WILL POWER YOUR 1/2 HP SUMP230V AC

5.3HRS

Continuous: 1050W

Surge Peak: 2300W

≈ 0.2 days (24h/day) · Safe motor start buffer (14.8% margin).

Ready to Run

Motor Start Margin+400W Safe Buffer(2300W Peak / 2700W Max)

How long will an EcoFlow DELTA 2 run a 1/2 HP sump?

1/2 HP sump running (1,150 W max) and start-up (2,700 W max) draw fit the EcoFlow DELTA 2's 1,800 W continuous / 2,700 W surge ratings.

LOW LOAD

31.0HRS

light rain: 4 cycles/h × 18 s at 800 W (16 W avg)

16 W33.02 W net

TYPICAL SPECNOMINAL

5.3HRS

active storm: 15 cycles/h × 36 s at 1,050 W (158 W avg)

157.5 W194.9 W net

HIGH LOAD

2.5HRS

severe flooding: 24 cycles/h × 45 s at 1,150 W (345 W avg)

345 W411.32 W net

TELEMETRY // PRIMARY READOUT230V AC

CALIBRATED RUNTIME

5.3HRS

≈ 0.2 days (24h/day)

NET PACK DRAW

194.9W

System standby power: 15W (7.7% of total draw)

CONTINUOUS_LOAD_UTILIZATION58% (1050W / 1800W)

APPLIANCE_DRAW1050W RUN / 2300W PK

SOURCE_LIMIT1800W CONT / 2700W PK

SOLAR_RECHARGE (500W)2.69H (0.67D)

PARAMETER_SANDBOX // ENGINE v1.0.0

Live Load, Duty Cycle & Usage Simulator

Active Running Load1050 W

MIN 400WNOMINAL 1050WMAX 1800W

Compressor / Cycling Duty Factor15%

5% INTERMITTENT50% CYCLING100% CONTINUOUS

Active Usage Window per Day24 h/day

1H / DAY8H OVERNIGHT24H CONTINUOUS

Solar Generation Array0 W

0W (OFF)200WMAX 500W

TEMPERATURE DERATE

CONTINUOUS

5.3HRS

OUTAGE SPAN

0.2days

AVG LOAD

157.5W

PACK DRAW

194.9W

Stack 1/2 HP sump with other devices on EcoFlow DELTA 2 in the Load BuilderOpen Builder →

HARDWARE_INTERFACE // ELECTRICAL AUDIT

EcoFlow DELTA 2 × 1/2 HP Sump Pump Electrical Interface

1. AC RECEPTACLE & PLUG MATCH

BS 1363 (230V 13A Irish Standard Plug) → DIRECT FIT

Provides 2× CEE 7/3 (230V) (120V 60Hz).

2. WAVEFORM & THD SENSITIVITY

PURE SINE WAVE // STANDARD LOAD

Pure sine wave inverter output. Safe for all standard household appliances.

3. STARTING SURGE (MOTOR INRUSH) MARGIN

2300W TYP (2700W MAX) VS 2700W LIMIT

Inductive motor/compressor load with 2.2× starting surge (motor inrush) (14.8% worst-case surge margin).

4. UPS SWITCHOVER & EXPANSION

UPS: EPS (30MS) · EXPAND: UP TO 3072WH

Wall AC fast charge at up to 1200W (50m to 80%, 80m to 100%).

PHYSICS // TRANSIENT DRAW ENVELOPE

Dynamic Inrush Surge Curve (Locked Rotor Amps vs Steady State)

SAFE INRUSH HEADROOM (+400W BUFFER)

Safe envelope verified: Starting surge (2300W) remains comfortably below the 2700W surge trip line, with steady-state operation settling into the safe continuous zone at 1050W.

LAB_RECORDS // EMPIRICAL OBSERVATIONS

Field Engineering Quirks & Operational Failure Modes

Hardware Bench Constraints (EcoFlow DELTA 2)

›X-Boost engages automatically above 1,800 W and runs resistive loads up to 2,200 W at reduced voltage. EcoFlow says it's meant for heating loads, not voltage-sensitive devices, and it's unavailable while the AC output is in wall-charging bypass.
›EPS mode: on wall power, connected loads run from the grid and switch to battery within 30 ms if the power fails. EcoFlow says this is not 0 ms and not suitable for servers or workstations.
›The AC output switches off after 12 hours with no load; set the app's AC timeout to 'Never' for intermittent loads such as fridges.
›Only 2 of the 6 AC outlets are grounded (NEMA 5-20R); the other 4 are two-prong NEMA 1-15R.
›The car socket and both DC5521 ports share one 126 W budget.
›EcoFlow's US product page lists 3,000 cycles to 80%, while the July 2025 US manual says 4,000; we use 3,000.

Cycle Physics & Dwell Behavior (1/2 HP Sump Pump)

›Sizing a backup source for a 1/2 HP sump pump is governed by its inductive starting surge (~2,300–2,700 W), which exceeds the 2,200 W starting limit of compact 2,000 W-class inverter generators.
›When connected to a portable power station, the station's AC inverter must stay on continuously waiting for the float switch, adding ~15 W of constant idle draw between pump cycles.
›Disable any power-saving AC auto-shutoff mode on the power station so the outlet remains live between float-switch cycles.

KNOWLEDGE_BASE // VERIFIED QA

Frequently Asked Questions: EcoFlow DELTA 2 & 1/2 HP Sump Pump

How long will an EcoFlow DELTA 2 run a 1/2 HP sump?

About 5.3 hours on AC power, with the 1/2 HP sump averaging 158 W (active storm: 15 cycles/h × 36 s at 1,050 W (158 W avg)). The EcoFlow DELTA 2 then draws about 195 W from its battery, including 15 W for the inverter itself. Best case: about 31 hours (light rain: 4 cycles/h × 18 s at 800 W (16 W avg)). Worst case: about 2.5 hours (severe flooding: 24 cycles/h × 45 s at 1,150 W (345 W avg)).

Can an EcoFlow DELTA 2 start a 1/2 HP sump?

Yes. The 1/2 HP sump's start-up peak of about 2,300 W (up to 2,700 W) fits within the EcoFlow DELTA 2's 2,700 W surge rating, with 0% headroom even in the worst case.

How long does the EcoFlow DELTA 2 take to recharge?

On wall power: about 50 minutes to 80% and 80 minutes to full (EcoFlow figures). With its maximum 500 W of solar input connected, expect about 400 W in full sun, so a full recharge takes roughly 2.7 hours of full sun, so it can refill in a single day with 4 peak sun hours.

AUDIT_LOG // DATA PROVENANCE & CITATIONS

NODE: ecoflow-delta-2/sump-pumpSYSTEM HASH: 0x7D2E0B2D7B3DVERIFIED TIMESTAMP: 2026-10-21T00:00:00Z

SOURCE_CITATIONS // ECOFLOW DELTA 2 (8)

[01] MANUAL2026-10-21
EcoFlow DELTA 2 User Manual (US) (EcoFlow)
[02] MANUFACTURER_SPEC2026-10-21
EcoFlow DELTA 2 product page (US) (EcoFlow)
[03] MANUFACTURER_SPEC2026-10-21
EcoFlow DELTA 2 North American outlet panel image (EcoFlow)
:: Outlet types read from the official image: T-slot outlets are NEMA 5-20R, two-prong outlets NEMA 1-15R.
[04] MANUFACTURER_SPEC2026-10-21
EU Declaration of Conformity, model EFD330 (dated 2022-09-14) (EcoFlow)
[05] MANUFACTURER_SPEC2026-10-21
DELTA 2 Max Smart Extra Battery page (lists DELTA 2 compatibility) (EcoFlow)
:: Maximum 3,072 Wh = 1,024 Wh base + one 2,048 Wh DELTA 2 Max Smart Extra Battery; the DELTA 2 accepts one extra battery.
[06] MANUFACTURER_SPEC2026-10-21
EcoFlow Canada DELTA 2 product page (compatible extra batteries) (EcoFlow)
[07] MANUFACTURER_SPEC2026-10-21
EcoFlow US store DELTA 2 listing (EcoFlow)
:: Redirects (HTTP 301) to the DELTA 3 product page as of 2026-10-21.
[08] PRESS2026-10-21
EcoFlow DELTA 2 launch coverage with US launch price (2022-10-04) (Electrek)

LOAD_CITATIONS // 1/2 HP SUMP PUMP (2)

[01] MANUFACTURER_SPEC2026-10-21
Zoeller Model 98 (M98 / N98) 1/2 HP Submersible Sump/Effluent Pump Technical Data Sheet (FM0522) (Zoeller Pump Company)
:: 115 V, 1/2 HP PSC motor: 9.4 A full-load running current (~1,050–1,150 W) and ~2,300–2,700 W inductive starting surge.
[02] MANUFACTURER_SPEC2026-10-21
Wayne CDU800 1/2 HP Submersible Cast Iron Sump Pump Specifications & Manual (Wayne Water Systems)
:: 120 V 1/2 HP submersible sump pump drawing ~800 W under typical residential 8–10 ft head with ~1,800–2,300 W starting surge.

Compare Other Sources for 1/2 HP sump

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