The best portable power stations for a sump pump

Our pickEcoFlow DELTA 2 Max

The one most people should buy

$1,029 at Amazon, October 3, 20262,048 Wh (1,741 usable)2,400 W continuous4,800 W peak51 lb

The EcoFlow DELTA 2 Max clears the worst-case starting surge on EcoFlow's own peak rating, which is the number this plan cannot compromise on, and it is still a one-person carry rather than a fixture. It covers the quiet end of a 24-hour outage and not the storm end, which is true of everything portable.

Our rule: the cheapest unit that covers a typical day of this plan (4,000 Wh), here with 2 extra batteries ($2,827). The same-size EcoFlow DELTA 3 Max (2048Wh) is $150 cheaper but takes no extra battery, and one charge does not cover this plan.

On a typical day this plan needs about 4,000 Wh: one charge plus 2 extra batteries. A hard-working sump pump may need up to about 14,000 Wh.

A sump pump, Wi-Fi and a few LED lights for 24 hours:

• Energyonly in the best case
• Running loadyes, even in the worst case
• Starting surgeSump pump: starts it

What you give up: Energy. It holds the least battery of the three and it is the first to empty on exactly the night you bought it for.

Owner reports and tester figures are on the model page.

Figures from us.ecoflow.com, captured August 12, 2026; recall screen: no published recall names this exact model (screened 2026-10-01), but a similarly named product was recalled; the dossier names it (how we screen, CPSC).

Less money, thinner marginJackery Explorer 2000 v2

Less money, thinner margin

$899 at Amazon, October 3, 20262,042 Wh (1,736 usable)2,200 W continuous4,400 W peak39 lb

The Jackery Explorer 2000 v2 holds much the same battery as our pick for less money and is the lightest of the three, but its peak rating clears this pump's starting surge in the best case only. That is worth saying without decoration: if your pump sits at the hard end of the range, Jackery's own peak figure does not cover the moment it starts.

A sump pump, Wi-Fi and a few LED lights for 24 hours:

• Energyonly in the best case
• Running loadyes, even in the worst case
• Starting surgeSump pump: may not start a hard-starting one

What you give up: Margin, everywhere. The surge clears the best case only, there is no expansion port, so the ceiling is fixed the day you buy it, and the solar input is the lowest here, which makes a multi-day refill slow.

Owner reports and tester figures are on the model page.

Figures from faq.jackery.com, captured August 12, 2026; recall screen: no published recall names this exact model (screened 2026-10-01) (how we screen, CPSC).

For a long stormAnker SOLIX F3800

For a long storm

$1,980 at Amazon, October 3, 20263,840 Wh (3,264 usable)6,000 W continuous9,000 W peak132 lb

The Anker SOLIX F3800 clears the worst-case surge with the most room to spare and holds nearly twice the usable battery of either smaller pick, which buys hours of hard cycling rather than a different verdict: it still covers the quiet end of a 24-hour outage and not the storm end. Where it pulls away is past that, with the largest solar input here and room for six expansion batteries.

A sump pump, Wi-Fi and a few LED lights for 24 hours:

• Energyonly in the best case
• Running loadyes, even in the worst case
• Starting surgeSump pump: starts it

What you give up: Weight and money. It costs about twice what our pick does and it becomes a fixture wherever you park it, so if your pit is an ordinary one, most of what you are paying to move never gets used.

Owner reports and tester figures are on the model page.

Figures from ankersolix.com, captured August 12, 2026; recall screen: no published recall names this exact model (screened 2026-10-01) (how we screen, CPSC).