Home backup guide
These picks come from our verified product records and deterministic home-backup scoring. Choose by the loads you need to run and the outage duration you want to cover—not by the biggest battery alone.
Shortlist
A balanced fit for a substantial essentials load without jumping straight to the heaviest class.
Trade-off: It weighs 41.7 lb, so lighter eligible options may be easier to move.
The lowest stored MSRP reference in our 900–1,300 Wh, 1,500 W-or-higher shortlist, with ties resolved by the same match score.
Trade-off: It weighs 27.6 lb, so lighter eligible options may be easier to move.
A lighter option for short essential-load coverage where storage space and portability matter.
Trade-off: Its battery capacity cannot be expanded later.
| Pick | Product | Capacity | Continuous / surge | Weight | Expandable |
|---|---|---|---|---|---|
| Best overall for typical essentials backup | Anker SOLIX C2000 Gen 2 | 2,048 Wh | 2,400 W / 4,000 W | 41.7 lb | Yes, up to 4,096 Wh |
| Best lower-cost 1 kWh option | EcoFlow DELTA 3 Plus | 1,024 Wh | 1,800 W / 3,600 W | 27.6 lb | Yes, up to 5,000 Wh |
| Best for apartments | Jackery Explorer 500 V2 | 512 Wh | 500 W / 1,000 W | 12.57 lb | No |
| Best for longer outages | Anker SOLIX F3000 | 3,072 Wh | 3,600 W / 7,200 W | 91.5 lb | Yes, up to 12,288 Wh |
| Best high-capacity option | EcoFlow DELTA Pro 3 | 4,096 Wh | 4,000 W / 8,000 W | 113.5 lb | Yes, up to 12,288 Wh |
Ratings are manufacturer specifications in our normalized dataset. Retail pricing and availability can change; use the market-specific links to check current offers.
Category details
Best overall for typical essentials backup
A balanced fit for a substantial essentials load without jumping straight to the heaviest class.
Reference backup profile: 1,800 Wh · 1,000 W running · 1,800 W startup. Match score 90/100.
Trade-off: It weighs 41.7 lb, so lighter eligible options may be easier to move.
Best lower-cost 1 kWh option
The lowest stored MSRP reference in our 900–1,300 Wh, 1,500 W-or-higher shortlist, with ties resolved by the same match score.
Reference backup profile: 900 Wh · 500 W running · 900 W startup. Match score 91/100.
Stored MSRP reference: $799. Based on stored MSRP reference, not live retail pricing.
Trade-off: It weighs 27.6 lb, so lighter eligible options may be easier to move.
Best for apartments
A lighter option for short essential-load coverage where storage space and portability matter.
Reference backup profile: 500 Wh · 500 W running · 900 W startup · 20 lb maximum. Match score 92/100.
Trade-off: Its battery capacity cannot be expanded later.
Best for longer outages
A larger battery for extended essential-load plans, with expansion available if needs grow.
Reference backup profile: 3,000 Wh · 1,200 W running · 2,000 W startup. Match score 86/100.
Trade-off: At 91.5 lb, it is difficult to carry frequently.
Best high-capacity option
The top match for a demanding high-capacity profile in the current verified catalog.
Reference backup profile: 3,800 Wh · 2,500 W running · 4,000 W startup. Match score 87/100.
Trade-off: At 113.5 lb, it is difficult to carry frequently.
Starting points
These examples use the calculator's existing cited and curated appliance presets. Every wattage, duration, and simultaneous-load choice remains editable after opening the calculator.
Refrigerator + Wi-Fi router + lights
Refrigerator + Wi-Fi router + lights + TV + laptop
Refrigerator + freezer + Wi-Fi router + lights + microwave and coffee maker used one at a time
Energy need is device energy before the calculator adds conversion loss and reserve. Refrigerator and freezer startup allowances are planning estimates; verify each appliance nameplate.
Watt-hours determine approximate runtime; inverter watts determine whether a device can run at all. Add the energy used by each device, allow for conversion losses and reserve capacity, then check both continuous and startup output requirements.
Start with essentials: refrigeration, internet, lights, and a few outlets. If you plan to power a CPAP machine, enter its documented load and operating settings. Heating appliances, microwaves, pumps, and compressors can move the required inverter size sharply upward.
For medically critical equipment, follow the device manufacturer and healthcare provider's backup-power guidance.
Add your devices and desired hours. The calculator checks energy, continuous load, and startup surge before recommending products.
Size my power stationStart with each device’s average watts and intended hours, then add conversion losses and reserve capacity. A refrigerator, internet equipment, lights, and medical equipment can have very different energy and startup needs, so one generic battery-size answer is rarely reliable.
It can only do so when both the continuous inverter rating covers the refrigerator’s running load and the surge rating covers its startup requirement. Battery watt-hours then determine the approximate runtime.
No. Extra capacity can extend runtime, but it also usually adds weight, size, and cost. Our matching logic rewards adequate headroom and penalizes unnecessary oversizing.
No. Eligibility and ranking use the same capacity, output, portability, use-case, and feature criteria described in our methodology. Price and commission rates are not ranking inputs.
This guide uses manufacturer specifications and transparent planning profiles, not hands-on testing claims. Check the linked product record and manufacturer documentation before purchase.
