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The best home battery backup keeps your fridge, furnace blower, Wi-Fi and lights running through a winter outage with no fumes, no fuel runs and almost no noise. Unlike the small power stations people take camping, these are big 3kWh-to-6kWh LiFePO4 batteries with high-output inverters, and most can grow into whole-home systems with add-on batteries and a home panel. We compared specs, expert testing and owner reviews to pick eight worth buying in 2026, from a budget 3kWh unit to a 90kWh-expandable flagship.
Part of our Home Comfort, Backup Power & Tool Guides.
Quick picks
| Home battery backup | Best for | Price range | |
|---|---|---|---|
| Anker SOLIX F3800 Plus | Best Overall | $$ | See price |
| EcoFlow DELTA Pro Ultra | Best for Whole-Home Backup | $$$–$$$$ | See price |
| Jackery Explorer 5000 Plus | Best Capacity in One Box | $$–$$$ | See price |
| EcoFlow DELTA Pro 3 | Best Fast-Charging Mid-Size | $$–$$$ | See price |
| Goal Zero Yeti Pro 4000 | Best Rugged Build | $$–$$$ | See price |
| Bluetti Apex 300 | Best Modular Value | $–$$ | See price |
| ALLPOWERS R4000 | Best High Output for the Money | $–$$ | See price |
| Pecron E3600LFP | Best Budget | $ | See price |
Price ranges (base unit): $ under $1,500 · $$ $1,500–$3,000 · $$$ $3,000–$5,000 · $$$$ $5,000+. Bundles with extra batteries, panels or home panels cost more, and these units go on sale often, so check the current price.
1. Anker SOLIX F3800 Plus: Best Overall
The F3800 Plus is the easiest big battery to live with. It rolls on wheels with an extendable handle, puts out 6,000W at 120V or 240V, and has the outlets most homes actually need for backup, including NEMA 14-50 and L14-30. In The Solar Lab’s head-to-head testing it powered through a car lift and an air compressor without throttling, and Anker’s customer support scored noticeably better than rivals. It also costs far less than EcoFlow’s flagship for similar everyday performance.
Key specs
- Capacity: 3,840Wh LiFePO4
- Output: 6,000W continuous, 120V/240V
- Expandable: up to 53.8kWh with expansion batteries
- Solar input: up to 3,200W
- AC charging: 1,800W from a standard wall outlet
- Weight: about 136 lb, with wheels and a telescoping handle
- UPS: three of the six 120V outlets stay live during a grid switchover
👍 Pros
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👎 Cons
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What owners say: Owners like that it runs a fridge, freezer, router and space heater together during outages and that it is simple to wheel into place. The common complaints are its weight and the fan noise when it works hard.
2. EcoFlow DELTA Pro Ultra: Best for Whole-Home Backup
If you want a battery system that can carry most of a house for days, the DELTA Pro Ultra is the most expandable option here. The inverter and battery are separate modules, so you can stack up to 90kWh and add EcoFlow’s optional Smart Home Panel 2 for generator auto-start, time-of-use scheduling and circuit-level monitoring. The Solar Lab called it the quietest large unit it tested, nearly silent even near 6,000W. The tradeoffs are price and the fact that it is a semi-permanent install rather than something you roll around.
Key specs
- Capacity: 6,144Wh per battery
- Output: 7,200W continuous, true 30A 240V outlet
- Expandable: up to 90kWh
- Solar input: up to 5,600W, with high- and low-voltage modes
- AC charging: 1,800W from a standard outlet, up to 6,000W with a single battery on a higher-power input
- Weight: about 186 lb total, split into two pieces of roughly 93 lb
- Home integration: optional Smart Home Panel 2
👍 Pros
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👎 Cons
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What owners say: Owners with the home panel love that it switches over automatically and quietly carries the house through long outages. Complaints center on cost and mixed experiences with customer support.
3. Jackery Explorer 5000 Plus: Best Capacity in One Box
The Explorer 5000 Plus packs just over 5kWh and 7,200W of 120V/240V output into a single wheeled unit, so you get near-flagship capacity without assembling modules. It has a 240V L14-30 outlet for a transfer switch and four 20A household outlets, and it can link with more Jackery units and batteries to reach 60kWh. Jackery rates the battery for 4,000 cycles and backs it with a five-year warranty.
Key specs
- Capacity: 5,040Wh LiFePO4 (4,000 cycles to 70%)
- Output: 7,200W, 120V/240V
- Outlets: four NEMA 5-20R, one NEMA L14-30
- Expandable: up to 60kWh with additional units and batteries
- Solar input: up to 4,000W
- AC charging: 1,800W, about 3.5 hours to full; about 1.7 hours with solar and AC together
- Weight: about 134.5 lb
- UPS: under 20ms switchover; 5-year limited warranty
👍 Pros
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👎 Cons
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What owners say: Buyers like the simple app, the quiet operation and that one unit covers essential circuits for a day or more. The main gripes are weight and wishing it came with more outlets on the front.
4. EcoFlow DELTA Pro 3: Best Fast-Charging Mid-Size
The DELTA Pro 3 is the pick if you want a big battery that refills fast between outages. On a 240V input it charges at 3,600W and hits 80% in roughly 50 minutes, and combined solar and AC charging can reach 7,000W. TechRadar’s reviewer used it as a UPS and whole-home backup and even charged an EV from it, scoring it five stars. It also has an IP65-rated battery, which is unusual at this size.
Key specs
- Capacity: 4,096Wh LiFePO4 (4,000+ cycles to 80%)
- Output: 4,000W continuous, 8,000W surge, 120V/240V
- Expandable: up to 48kWh
- Solar input: up to 2,600W
- AC charging: 1,800W at 120V, 3,600W at 240V
- Weight: about 113.5 lb
- UPS: 10ms switchover; TT-30R RV outlet
👍 Pros
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👎 Cons
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What owners say: Owners rave about how quickly it refills and how seamlessly it takes over when the grid drops. Some say the base price is steep unless you catch a sale or bundle.
5. Goal Zero Yeti Pro 4000: Best Rugged Build
Goal Zero’s Yeti Pro 4000 is built like job-site equipment, with inputs on the back and outputs on the front, which suits a fixed spot in a garage or utility room. It offers about 4kWh, 3,600W continuous with a 7,200W surge, and up to 20kWh with expansion batteries. TechRadar’s reviewer said it could run a full-size fridge for one to two days, and Goal Zero’s Haven setup lets it act as home battery backup.
Key specs
- Capacity: about 3,994Wh LiFePO4 (4,000+ cycles)
- Output: 3,600W continuous, 7,200W surge
- Expandable: up to 20kWh
- Solar input: up to 3,000W
- AC charging: 1,800W
- Home integration: Goal Zero Haven system; app control
👍 Pros
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👎 Cons
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What owners say: Owners like its sturdy feel and strong solar charging. The common complaints are the weight and the high list price, though it is often discounted at retailers.
6. Bluetti Apex 300: Best Modular Value
The Apex 300 gives you about 2.8kWh and 3,840W at a much lower price than the flagships, and it scales up to 19.4kWh with Bluetti’s B300K batteries. It is noticeably lighter than the 4kWh+ units, has a 240V NEMA 14-50R outlet plus a TT-30R RV outlet, and can turbo-charge at up to 3,840W with the right input cable. A 6,000-cycle battery rating and five-year warranty round out a strong package.
Key specs
- Capacity: 2,764.8Wh LiFePO4 (6,000 cycles to 80%)
- Output: 3,840W continuous
- Outlets: four NEMA 5-20R, one TT-30R, one NEMA 14-50R
- Expandable: up to 19.4kWh
- AC charging: 1,800W standard, up to 3,840W with a TT-30P or L14-50P cable
- Weight: about 83.8 lb
- UPS: under 20ms; 5-year warranty
👍 Pros
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👎 Cons
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What owners say: Buyers like the price, the weight and how easy it is to add batteries later. Some wish the base unit held more energy on its own.
7. ALLPOWERS R4000: Best High Output for the Money
ALLPOWERS’ R4000 targets shoppers who want 4,000W of continuous output for big 120V loads like a well-sized space heater, microwave or window AC without paying flagship prices. It uses a LiFePO4 battery, offers a UPS mode and app control, and ALLPOWERS says it can go from empty to full in about two hours with combined AC and solar charging. Listings put capacity at roughly 3.5kWh, so check the exact figure on the listing you buy.
Key specs
- Capacity: roughly 3.5kWh LiFePO4 (listings vary slightly)
- Output: 4,000W continuous, 6,000W peak
- Outlets: 11 total, including four AC, two USB-C, four USB-A and a car socket
- Charging: about 2 hours to full with AC and solar combined (manufacturer claim)
- UPS mode and app control
👍 Pros
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👎 Cons
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What owners say: Owners like the power-per-dollar and the app. The usual complaints are the bulk and that some spec details are hard to pin down before buying.
8. Pecron E3600LFP: Best Budget
The Pecron E3600LFP is the cheapest way into 3kWh-class backup. It delivers 3,600W continuous with a 7,000W surge, takes up to four expansion batteries, and two units can be paired with Pecron’s 240V connect box for 7,200W at 240V. With the 30A cable it recharges from the wall in about 1.3 hours, which is quick for the price.
Key specs
- Capacity: 3,072Wh LiFePO4 (3,500+ cycles to 80%)
- Output: 3,600W continuous, 7,000W surge
- 240V: by pairing two units with the 240V box
- Solar input: up to 2,400W
- AC charging: 3,200W with the 30A cable, 1,800W with the 15A cable
- Weight: about 79 lb
- Warranty: 2+3 years
👍 Pros
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👎 Cons
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What owners say: Owners call it excellent value for keeping a fridge, freezer and essentials running. Some mention a learning curve with the app and settings.
How to choose the best home battery backup
- Add up your loads first: List what must stay on (fridge, freezer, furnace blower, sump pump, router, lights, medical devices) and their running and starting watts. Use our power station and generator sizing calculator to estimate the output and capacity you need.
- Capacity (kWh) sets runtime: A fridge and essentials might use a few kWh per day. 3–4kWh covers a day of essentials for many homes; 5kWh+ or expansion batteries suit multi-day outages.
- Output and 240V: Well pumps, electric dryers and many central AC units need 240V. Pick a unit with 240V output (or one that pairs to make it) if you have those loads.
- Home integration: To power hardwired circuits, you need a transfer switch, interlock or the brand’s home panel, installed by a licensed electrician. Never backfeed through a wall outlet.
- Recharge options: Fast AC charging refills between outages; high solar input matters if the grid is down for days. Some units also pair with a gas generator.
- UPS switchover: A 10–20ms switchover keeps routers and computers from rebooting. Check how many outlets stay live in UPS mode.
- Weight and placement: These weigh 80–190 lb. Plan a permanent spot near your panel or choose a wheeled design.
FAQ
How long will a home battery backup run a refrigerator?
It depends on the fridge and the battery. A typical full-size fridge uses roughly 1–2kWh per day, so a 4kWh battery can often run it for a couple of days on its own. TechRadar’s reviewer estimated one to two days for a residential fridge on the 4kWh Yeti Pro 4000. Check your fridge’s energy label for a better estimate.
Is a home battery backup better than a generator?
Batteries are silent, fume-free and safe to run indoors, and they switch over instantly. Generators run as long as you have fuel. Many people pair a battery with solar panels or a small generator for long outages. See our dual fuel generator guide if you want a fuel option.
Can a home battery backup power my whole house?
A single 4–6kWh unit usually covers essential circuits rather than everything at once. Whole-home backup typically needs multiple batteries, a home panel or transfer switch, and often solar. Have a licensed electrician size and install the connection.
Do I need solar panels?
No. You can recharge from a wall outlet before a storm and keep the battery topped up. Solar panels add a way to recharge when the grid is down for days. Our solar generator guide covers battery-plus-panel bundles.
Related guides
- The Best Portable Power Stations for Home Backup
- Anker SOLIX F3800 Plus vs EcoFlow DELTA Pro 3
- The Best Solar Generators
- Winter Storm and Power Outage Prep
- Home Comfort, Backup Power & Tool Guides
Sources
We drew testing notes and specs from TechRadar (including its DELTA Pro 3 and Yeti Pro 4000 reviews), The Solar Lab, and manufacturer and retailer specifications from Jackery, Bluetti, Pecron and ALLPOWERS. Owner feedback is summarized in our own words from public reviews. Photos courtesy of Unsplash.