The Home Backup

A battery for the house, one you can grow into

On this site, a home battery is a cabinet you order, roll onto a dry floor, and add capacity to when the outages teach you what you actually need. No solar contract, no installer’s quote on the kitchen table. If someone’s already pitching you a Powerwall with a roof attached, you’re in a different store, and that’s okay.

Large home-battery cabinet on casters in a clean garage corner with neat conduit and daylight from an open door.
Portrait of Julio Martinez

Written by Julio Martinez · Updated September 30, 2026

We buy nothing on your behalf and take no payment for a good word. Prices carry the day we checked them.

The short version

  • Three expandable home backup batteries you can order without a solar-sales visit: the Anker SOLIX F3800 when a 240-volt load is the point, and the BLUETTI AC200L and Jackery Explorer 2000 Plus as 120-volt cores that grow.
  • Every spec comes off the maker's own page with the date attached.
  • Read on to find the cabinet that matches your list.

Type “home battery” into a search box and three very different products come back wearing the same name: a roof-tied storage system, an automatic standby generator, and a big portable battery that can feed a wall inlet. This category is the third one, and honestly, for a lot of houses it’s the sweet spot. A cabinet like the F3800 rolls in on casters, hums quietly, and never asks for gasoline. It does still want a licensed electrician if it’s going to touch your wall wiring, and it does run out of stored hours eventually. Knowing that going in is most of the wisdom here.

Our picks

The short answer, if you only have a minute. Every price below carries the day we checked it.

The three cabinets we name

The headliner is the Anker SOLIX F3800, and one line explains its whole existence: it speaks 240 volts. Well pumps, dryers, split-phase inlets: the loads every other battery here politely declines. It holds 3,840 Wh, pushes 6,000 watts steadily with a 9,000-watt surge for the moment a motor wakes up, and cost $2,199.98 on Anker’s page when we checked on August 26, 2026. It’s expandable. Anker just says “yes” without naming the module, so we won’t name it for them.

The other two are 120-volt machines that grow. The BLUETTI AC200L (2,048 Wh, 2,400 W, 62.4 lb, $899) can stretch all the way to 8,192 Wh with extra batteries, and that’s a lot of quiet fridge nights. The Jackery Explorer 2000 Plus (2,042.8 Wh, 3,000 W, 61.5 lb, $1,429 for the kit with two SolarSaga 100W mini panels, out of stock on jackery.com, checked September 30, 2026) grows with the named Battery Pack 2000 Plus. Neither maker prints one clean surge number, so we leave those cells blank in our tables rather than guess.

And the one rule worth taping to the fridge: stacking batteries never changes voltage. Extra packs buy you more hours (more fridge, more lamps, more of the baby monitor), but a 240-volt well needs the F3800 or a standby generator, full stop. That single sentence saves more money in this category than any coupon.

How we judged these

  1. Which legs it speaks. A 240-volt load is a yes-or-no question, and no quantity of extra batteries turns a no into a yes.
  2. An expansion path with a name on it. “Expandable” on a marketing page is a mood. A named module and a printed ceiling is a plan.
  3. Orderable without a sales visit. Everything here is a cabinet you can buy today, not a quote somebody brings to your kitchen table.
  4. Honest about the electrician. Anything that will touch house wiring needs a proper inlet and interlock, and we would rather say that up front than at the bottom of a page.

The F3800 is the 120/240-volt cabinet. The AC200L and Explorer 2000 Plus are 120-volt machines that grow. Photos are the makers’ own studio shots. Specs checked August 26, 2026.

The featured shops are Jackery, BLUETTI, and Anker SOLIX. The price you pay never changes if a commission is paid. Why those three and not others: how we review. The long version: disclosure.

Also considered

Tesla Powerwall and other wall-mounted systems. Excellent products for the house that is also getting a roof array. They’re out of scope here because you can’t just order one and roll it into a basement. There’s an installer, a survey, and a contract in between, and that’s a different kind of decision than the one this site is built for.

EcoFlow Delta Pro Ultra. A serious 240-volt rival to the F3800, with a bigger tank on it.

DIY server-rack LiFePO4 banks. Far more capacity per dollar, and genuinely the right answer if you’re patient and you have an electrician friend who owes you one. It’s also a wiring project with a real fire code attached, which puts it well outside what we’ll recommend to a first-time buyer at nine o’clock on a stormy night.

This category fits you if

  • You want stored hours you can add to later, without a solar salesperson in the living room.
  • You’re willing to sort your loads into 120-volt and 240-volt before falling for a capacity number.
  • You’ll pay an electrician for a proper inlet and interlock if the cabinet will ever touch house wiring.
  • Silence and clean air matter more to you than unlimited runtime.

Skip it if

  • The house needs automatic heat and air for days. Start at whole-house generators.
  • You already have rooftop solar and a Powerwall quote. Different product, different site.
  • You only need the fridge overnight. A smaller power station does it for less.

How a basement cabinet earns its keep

The good install is wonderfully boring: a dry floor, labeled cables, an electrician’s interlock if there’s an inlet, and one fridge-start test done in daylight while everything is calm. Decide the “off” list now, too (the range, the dryer, most of the air conditioner), and write it on the cabinet, so nobody flips the wrong breaker at midnight out of hope.

Recharge is the other half of the purchase, and people forget it until night two. The wall refills the battery between flickers. Portable panels refill it in daylight, slowly, and only if somebody goes out and re-aims them at noon. And a space heater will drink 3.84 kWh in an evening, which is why the off list exists. Extra modules stretch a multi-day event beautifully. They don’t repeal physics, and they were never supposed to.

  1. Write the list of what must stay on before anything goes in a cart. It decides everything after.
  2. Treat 240 volts as a hard fork, because it is one: no setting, cable, or extra pack crosses it.
  3. Plan the recharge the same week you plan the capacity. A tank you can’t refill is one outage, spent once.
  4. Never use a dryer-outlet cheat cord. The lineworker down the street is trusting you on this one.

The honest fine print

Picks rest on the jobs each machine fits, the makers’ own electrical ratings dated August 26, 2026, and the documented ways buyers get burned: surge, voltage, and illegal hookups. There’s no invented generator link dressing this category up as something it isn’t.

Everything in this category

If your real job is smaller (a fridge and a modem for an evening), take it to power stations for home backup and spend less. If it’s bigger, like an automatic machine on a pad, start with what a standby really costs. Size it first. The buying part gets easy after that.