Home Battery Backup in 2026: Sizing, Cost & Plug-in LiFePO4 Picks

On jackery.com today, a plug-in LiFePO4 home battery runs from $899 for the 2,042 Wh Explorer 2000 v2 to $3,149 for the 5,040 Wh Explorer 5000 Plus. Plugging appliances in needs no install. Feeding home circuits needs a transfer switch, which Jackery says typically costs $1,500 to $2,000 to install.[Jackery][Jackery]

Decide first: For a fridge and router through a short outage, a 2 kWh battery you plug into is the simplest choice. For 240V loads or several circuits, look at the 5 kWh Explorer 5000 Plus with a transfer switch. For multi-day outages on whole-home loads, compare a standby generator.

No Gas Line or Fuel Needed

Quick Picks: Plug-in LiFePO4 Home Battery Backup (2026)

Specs and prices checked on jackery.com · Oct 25, 2026

1. Whole-Home Essentials, 120V/240V5,040 Wh · 7.2 kW

Jackery Explorer 5000 Plus

Best for: 240V well pumps and central AC, or up to 12 circuits with the Smart Transfer Switch

$3,149 on jackery.com$3,499 list (power station only)Checked on jackery.com · Oct 25, 2026 · prices change often
  • Battery5,040 Wh LiFePO4, expandable to 60 kWh
  • AC output7,200 W rated, 14,400 W surge, 120V/240V
  • UPS<20 ms; 0 ms online UPS
  • Cycle life / weight4,000 cycles to 70% · about 134.5 lb
Ad · affiliate linkCheck Explorer 5000 Plus Price at Jackery →
2. Mid-Size Essentials, 120V3,584 Wh · 3.6 kW

Jackery HomePower 3600 Plus

Best for: Fridge, lights, router and other 120V essentials; pair two units for 240V

$1,709 on jackery.com$1,899 list (power station only)Checked on jackery.com · Oct 25, 2026 · prices change often
  • Battery3,584 Wh LiFePO4, expandable to 21 kWh
  • AC output3,600 W at 120V; two units for 240V
  • Cycle life6,000 cycles
  • Warranty5 years
Ad · affiliate linkCheck HomePower 3600 Plus Price at Jackery →
3. Fridge + Router for a Day2,042 Wh · 2.2 kW

Jackery Explorer 2000 v2

Best for: A refrigerator, Wi-Fi and phones through a shorter outage

$899 on jackery.com$999 list (power station only)Checked on jackery.com · Oct 25, 2026 · prices change often
  • Battery2,042 Wh LiFePO4
  • AC output2,200 W
  • UPS<20 ms switchover
  • Cycle life / warranty4,000+ cycles · 3-yr standard
Ad · affiliate linkCheck Explorer 2000 v2 Price at Jackery →

Generator vs battery backup: comparison

OptionBest forCost and installNext step
Explorer 5000 Plus + Smart Transfer SwitchUp to 12 circuits; 120V and 240V loads$3,989 kit on jackery.com[Jackery], plus about $1,500–$2,000 for an electrician to install the switch (Jackery); permit rules varySee at Jackery
HomePower 3600 Plus120V essentials; two units for 240V$1,709 on jackery.com[Jackery]; no install to plug appliances inSee at Jackery
Fixed wall battery (e.g. Tesla Powerwall)Solar homes; automatic backup, 240VInstaller quote; certified installer and permitsGet 2–3 installer quotes
Home standby generatorLong outages on gas or propane; 240V$8,000–$16,000 installed on average (Generac)[Generac]; dealer, gas line, permitsGenerator cost guide

Ad · affiliate links: Jackery links above. Disclosure: Backup Power Score may earn a commission if you buy through Jackery links, at no extra cost to you. It does not change what we write. See how we make money.

HOMEOWNER MATHPrices checked Oct 25, 2026

What home backup costs, side by side

STANDBY GENERATOR

Gas or propane standby

$8k–$16kinstalled, on average (Generac)

Runs as long as fuel lasts. Needs a dealer, gas line and permits.[Generac]

FIXED WALL BATTERY

Wall-mounted battery

Quotepriced by certified installer

Automatic backup; pairs with rooftop solar. Get at least two quotes.

PLUG-IN + TRANSFER SWITCH

Explorer 5000 Plus kit

$3,989kit with switch on jackery.com + ~$1,500–$2,000 install

5,040 Wh, 120V/240V. Or skip the switch and plug appliances in.[Jackery]

Fridge runtime calculator (your numbers)

Hours = (battery Wh × usable %) ÷ (fridge Wh per hour + other loads in watts). Fridge Wh per hour = EnergyGuide kWh per year × 1,000 ÷ 8,760. Starting values are examples only; usable % is an assumption, so use your unit's spec if it lists one.




How many watts does a refrigerator use in a 24-hour outage?

Every model is different, so use your own number. The FTC says the yellow EnergyGuide label on refrigerators tells you how much energy the appliance uses[FTC]; the label lists estimated yearly use in kWh. Divide by 365 to get daily use. A refrigerator rated 500 kWh a year uses about 1.37 kWh (1,370 Wh) a day, or an average of about 57 W. The compressor switches on and off, so the watts while it runs are higher than that average, and your battery's output must cover the startup.

Example: a 2,042 Wh battery with an assumed 85% usable energy gives about 1,736 Wh. Divided by 1,370 Wh a day, that is roughly 1.3 days for that fridge alone. Try your numbers in the calculator above.

How to size a home battery backup

  1. List what must run. Write down the appliances you need in an outage: refrigerator, router, lights, sump pump, well pump.
  2. Find each appliance's energy use. For a refrigerator, read the yellow EnergyGuide label, which shows estimated yearly electricity use in kWh. Divide by 365 for daily kWh. For other items, use the nameplate watts.
  3. Add up daily watt-hours. Multiply each item's watts by the hours it runs, then add the refrigerator's daily kWh times 1,000.
  4. Pick capacity with margin. Choose a battery whose capacity covers your daily total for the number of outage days you plan for, with room for inverter losses.
  5. Check output and voltage. Make sure the battery's AC output covers everything running at once, and that it has 240V if you need a well pump or central AC.
  6. Decide how to connect. Plug appliances in directly, or have a licensed electrician install a transfer switch so the battery feeds home circuits. Ask about local permits.

Jackery says its portable power stations are not recommended for medical devices, life-support equipment or other uses where a power interruption could cause injury[Jackery]. If someone at home depends on powered medical equipment, talk to the device maker and your utility.

Whole home battery backup cost

Prices on jackery.com on October 25, 2026[Jackery][Jackery][Jackery]:

SetupPriceList
Explorer 2000 v2 (2,042 Wh)$899$999
HomePower 3600 Plus (3,584 Wh)$1,709$1,899
Explorer 5000 Plus (5,040 Wh)$3,149$3,499
Explorer 5000 Plus + Smart Transfer Switch$3,989$4,719
Explorer 5000 Plus (10 kWh) + Smart Transfer Switch$6,429$7,589
Home Backup Kit 5000 Plus (20 kWh)$12,139$13,489

Add about $1,500 to $2,000 for a transfer switch install, which Jackery says varies by location and home[Jackery]. The federal Section 25D credit does not apply to 2026 installs[IRS].

Ad · affiliate link: Check current Explorer 5000 Plus kits on Jackery
Disclosure: Backup Power Score may earn a commission if you buy through Jackery links, at no extra cost to you. It does not change what we write. See how we make money.

Keep reading

FAQ

How much does a whole home battery backup cost?

It depends on capacity and how it connects. On jackery.com on Oct 25, 2026, the Explorer 5000 Plus with Smart Transfer Switch was $3,989, a 10 kWh kit with the switch $6,429, and a 20 kWh kit $12,139. Jackery says installing the switch typically costs $1,500 to $2,000 more. Fixed wall batteries are priced by installer quote.

How many watts does a refrigerator use?

It varies by model, so check yours. The yellow EnergyGuide label on most refrigerators shows estimated yearly electricity use in kWh. Divide by 365 for daily use: a fridge rated 500 kWh a year uses about 1.37 kWh, or 1,370 Wh, per day. The compressor cycles, so running watts are higher than that daily average.

Is there a federal tax credit for home batteries in 2026?

Not under Section 25D. The IRS says the Residential Clean Energy Credit is not allowed for expenditures made after December 31, 2025, so battery storage installed in 2026 does not qualify. Check your state and utility for any local battery or backup incentives.

Do I need a permit for a home battery backup?

Plugging appliances into a portable battery needs no installation. Connecting a battery to your home's circuits uses a transfer switch, which a licensed electrician should install, and many cities require an electrical permit for that work. Ask your local building department. Jackery says you can use its installer or your own certified electrician.