Last updated September 27, 2026. Not a lab test. Not a flood-rescue claim. Hours below are arithmetic: published watt-hours ÷ cited running watts. We did not run a sump pump on a station through a storm. Locked-rotor amps (LRA) / start watts are cited only when a named maker publishes them—most consumer sump sheets in this draft do not.
Size backup power from two jobs, not one marketing number:
- Continuous AC watts on the portable power station must clear the pump’s running watts (published amps × line volts).
- Surge (peak) watts must clear start / locked-rotor current—only from your pump nameplate or a maker LRA row. If the maker sheet prints running amps only, stop inventing surge and read the plate (or call the maker) before you buy a station for this job.
Hours ≈ battery Wh ÷ cited running watts when the pump is actually on. Float switches cycle; real Wh/day depends on how often the pit fills—not a Boom storm test.
Affiliate note: Off Grid Power Boom may earn a commission from qualifying purchases. The site header already carries the disclosure—this is the one body reminder for this draft.
Battery-backup sump system vs portable power station (do not muddy the jobs)
| Path | What it is | Power math |
|---|---|---|
| This page — PPS + AC primary pump | Plug the house AC sump pump into a portable power station AC outlet during an outage (or run a transfer path that is code-legal) | Continuous AC ≥ running watts; surge ≥ plate LRA; Wh ÷ running W for on-time |
| Dedicated battery-backup sump | A second DC (usually 12 V) pump + charger + standby battery that takes over when AC power or the primary pump fails | Maker DC amps @ head + battery Ah / duty-cycle claims—not the same as inverter surge for the AC primary |
Example of the dedicated path (not a PPS): Basement Watchdog BWSP Special CONNECT® lists a DC backup pump at 18 A @ 10 ft total head, 2,600 GPH @ 0 ft / 1,850 GPH @ 10 ft, charger 12 VDC / 1.6 A, and maker runtime 48 hours at a 10% duty cycle with one BW-27AGM battery (maker claim; not a Boom test). Source: Basement Watchdog BWSP product page.
A PPS does not replace a purpose-built backup pump’s dual-float / fluid-alarm packaging. A battery-backup kit does not automatically make a 300 W camping station clear a 9–10 A AC primary motor. Pick the job, then size that job.
Named running watts (manufacturer sources) — LRA status honest
Convert published amps to watts with V × A. Use the voltage the sheet prints (115 V or 120 V). Prefer your cord-tag / nameplate when it differs.
| Model | HP (maker) | Published amps | Line V | Running watts (V × A) | Maker LRA on sheet? | Source |
|---|---|---|---|---|---|---|
| Zoeller M53 (Model 53®) | 3/10 HP | 9.7 A | 115 V | ≈ 1,116 W (115 × 9.7) | No | Zoeller Model 53; FM2778 PDF |
| Wayne CDU980E | 3/4 HP | 9.8 A | 120 V | ≈ 1,176 W | No | Wayne CDU980E; Wayne amp PDF |
| Wayne CDU790 | 1/3 HP | 9.5 A | 120 V | ≈ 1,140 W | No | Wayne amp PDF |
| Wayne CDU800 | 1/2 HP | 10 A | 120 V | ≈ 1,200 W | No | Wayne amp PDF |
| Superior Pump 92330 | 1/3 HP | 4.1 A | 120 V class | ≈ 492 W | No | Superior 92330 |
| Superior Pump 92501 | 1/2 HP | 7.6 A | 120 V class | ≈ 912 W | No | Superior 92501 |
Need LRA / locked-rotor amps from your pump plate. Zoeller, Wayne, and Superior sheets cited above publish running amps for these SKUs. They do not print an LRA / locked-rotor / starting-amp row we can cite honestly. Retailer Q&A pages sometimes quote “starting amps”—Boom does not treat those as maker LRA. Read the metal plate / cord tag on your pump, or ask the manufacturer for LRA, before claiming any station “clears start.”
Why many small stations fail (even before surge)
- Running watts are already high. A Zoeller M53-class ≈ 1,116 W running load already exceeds a 300 W camping station’s continuous AC rating—and it exceeds a 1,000 W continuous station on paper (1,116 > 1,000). The pump never gets to the “surge” debate if continuous AC is short.
- Start current is higher still. Induction motors draw locked-rotor current until the impeller spins. Without a published LRA, Boom will not invent a multiplier or a fake “3× HP” rule for these brands.
Prefer pure-sine AC. Keep other heavy AC loads off during pump start. Do not backfeed a house panel with a suicide cord—see transfer switch safety (UL 1008).
Continuous AC vs surge (portable power station) — honesty table
Station continuous and surge figures below are maker published. The “clears running?” columns use only the cited running watts. The “clears start?” column is unknown without your plate LRA—we will not invent it.
| Station | Wh | Continuous AC | Surge (maker) | Clears M53 ≈1,116 W run? | Clears CDU980E ≈1,176 W run? | Clears 92330 ≈492 W run? | Clears start / LRA? |
|---|---|---|---|---|---|---|---|
| Jackery Explorer 300-class | 288 Wh | 300 W | 600 W peak | No | No | No | Unknown — need plate LRA |
| BLUETTI AC70 | 768 Wh | 1,000 W | 1,500 W | No (1,000 < 1,116) | No | Yes on continuous | Unknown — need plate LRA |
| Jackery Explorer 1000 v2 | 1070 Wh | 1,500 W | 3,000 W peak | Yes on continuous | Yes on continuous | Yes on continuous | Unknown — need plate LRA |
BLUETTI’s AC70 materials warn that Power Lifting Mode is aimed at resistive loads and is not the path for motors whose surge may be several times running power. For a sump, use published continuous / surge ratings and your LRA—not marketing modes.
Worked examples (arithmetic only — running watts)
Example A — Zoeller M53 at ≈ 1,116 W running
| Station | Maker Wh | Hours if pump never stopped (Wh ÷ 1,116) | Continuous AC clears 1,116 W? |
|---|---|---|---|
| Jackery 300-class | 288 | ≈ 0.26 h (~16 min) | No |
| BLUETTI AC70 | 768 | ≈ 0.69 h | No |
| Jackery Explorer 1000 v2 | 1070 | ≈ 0.96 h | Yes on continuous — still need plate LRA for start |
Float cycles mean real Wh/day can be far below 1,116 × 24. That does not shrink the continuous-AC requirement for each start/run event.
Example B — Superior Pump 92330 at ≈ 492 W running
| Station | Maker Wh | Hours at 492 W (Wh ÷ 492) | Continuous AC clears 492 W? |
|---|---|---|---|
| Jackery 300-class | 288 | ≈ 0.59 h | No |
| BLUETTI AC70 | 768 | ≈ 1.56 h | Yes on continuous |
| Jackery Explorer 1000 v2 | 1070 | ≈ 2.17 h | Yes on continuous |
Still need plate LRA before calling any of these “start-safe.”
Example C — Wayne CDU980E at ≈ 1,176 W running
Same continuous story as the Zoeller row: 300 W and 1,000 W continuous stations fail the running-watt gate; 1,500 W continuous clears running on paper. Surge remains plate-LRA only.
Soft station shortlist (makers’ Wh; Awin Jackery + BLUETTI)
These are sizing references for continuous clearance and Wh math—not a Best award list, and not a flood guarantee.
Jackery Explorer 300 Plus — 288 Wh
Jackery US: 288 Wh, 300 W AC. Fails continuous for every named pump row above that sits near 492–1,176 W. Useful teaching row for why camping-class stations fail sump jobs—not a sump recommendation.
Check Jackery Explorer 300 Plus (Jackery US)
BLUETTI AC70 — 768 Wh
BLUETTI US: 768 Wh, 1,000 W AC, 1,500 W surge. Clears Superior ≈ 492 W running on paper; fails Zoeller ≈ 1,116 W and Wayne ≈ 1,176 W continuous. Confirm kit vs bare station on the maker page.
Jackery Explorer 1000 v2 — 1070 Wh (step-up continuous)
Jackery US: 1070 Wh, 1,500 W rated AC, 3,000 W surge peak. Clears the named Zoeller / Wayne / Superior running rows above on continuous AC. Still need your plate LRA before claiming start clearance.
Check Jackery Explorer 1000 v2 (Awin)
| Station | Path | Wh | Clears M53 run (~1,116 W)? | Clears 92330 run (~492 W)? | Start / LRA |
|---|---|---|---|---|---|
| Jackery Explorer 300 Plus | AC | 288 | No | No | Need plate |
| BLUETTI AC70 | AC | 768 | No | Yes (continuous) | Need plate |
| Jackery Explorer 1000 v2 | AC | 1070 | Yes (continuous) | Yes (continuous) | Need plate |
Safety and related Boom job pages
- Read your pump plate for amps and, when printed, LRA / locked rotor / start amps. Prefer plate over a retailer blog.
- GFCI / grounded receptacle rules in the pump manual still apply on battery power.
- Do not backfeed a panel. House circuits: transfer switch safety (UL 1008).
- Same Wh÷W pattern as CPAP backup battery and nebulizer backup battery—different watt figures and a motor surge / LRA honesty bar this page owns.
- Compressor-adjacent surge math (different appliance): AC chest freezer power station runtime and 12V fridge / freezer runtime.
- Keep Wi-Fi up while you watch a pit monitor: router / modem battery backup when that URL is live.
Guides hub: how-to. Portable power stations hub: portable power stations.
What this page does not claim
- No Boom storm / flood-rescue tests or “keeps any basement dry” promise
- No invented LRA, start watts, or “HP × 3 = surge” rules for Zoeller / Wayne / Superior
- No claim that a PPS replaces a dedicated battery-backup sump system (or vice versa)
- No second affiliate disclosure beyond the one body reminder + theme header
- Plate-LRA gated: start clearance stays Unknown without your plate LRA—no invented surge
FAQ
How many watts does a sump pump use?
Running watts ≈ published amps × volts. Named examples above: Zoeller M53 ≈ 1,116 W, Wayne CDU980E ≈ 1,176 W, Superior 92330 ≈ 492 W, Superior 92501 ≈ 912 W. Start / LRA is separate and often missing from consumer sheets—read the plate.
Will a 300 W power station run a sump pump?
Not for the Zoeller / Wayne / Superior running loads cited here. Continuous AC must clear running watts first.
Do I need a battery-backup sump or a portable power station?
Different jobs. A dedicated 12 V backup pump (example: Basement Watchdog BWSP) is built to take over when AC fails. A PPS is a general inverter battery you might use to feed the AC primary—only after continuous + plate-LRA checks pass.
Can Boom tell me this station clears my pump’s start?
Only if your plate or maker sheet prints LRA (or start amps) and the station’s published surge is ≥ LRA × volts (with headroom). Without that number, any “yes it starts” claim would be invented.
Robert DeWitt writes about off-grid power gear for Off Grid Power Boom. Based in Arizona, he uses portable power stations, solar panels, and battery systems regularly in extreme heat—focusing on practical runtime, charging speed, reliability, and real-world usability for camping, RV trips, and home backup.
Editorial focus: portable power stations & solar generators, solar panel setups, batteries/inverters, and off-grid preparedness.