Home Backup Power Guide: Batteries, Transfer Switches and Outage Planning

Grid outages are getting longer and more frequent across most of the US, and the backup market has split into two philosophies: burn fuel (generators) or store energy (battery systems). For most households, modern LiFePO4 battery backup now wins on safety, noise, indoor use and zero maintenance. Here is how to plan it properly.

Step 1: list your true essentials

Walk the house and write down what genuinely must run in an outage, with running watts and surge watts:

• Refrigerator: 150 to 250W running, up to 1,200W surge
• Chest freezer: 100 to 200W running
• Wi-Fi and modem: 15 to 30W
• Phone and laptop charging: 100W
• CPAP or medical devices: 30 to 100W
• Lights (LED): 10W per bulb
• Sump pump: 800 to 1,500W with high surge

A typical essentials load runs 300 to 600W continuous. Over 24 hours that is 7 to 15kWh, but refrigerators cycle, so real draw is far lower: a fridge consumes roughly 1 to 1.5kWh per day.

Step 2: size the battery

• Short outages (2 to 8 hours): a 2,000Wh class station carries fridge, lights, Wi-Fi and phones comfortably.
• 1 to 2 days: 3,600Wh class, such as the Jackery HomePower 3600 Pro Max, especially with expansion batteries.
• Multi-day resilience: 5,000Wh+ with solar input, like the Explorer 5000 Plus platform with expansion packs, refilled daily by panels.

Step 3: decide how power reaches the loads

Extension cords work for a fridge and lamps: zero installation. A manual transfer switch wired to selected circuits by an electrician lets you back up hardwired loads (furnace fan, well pump, sump) safely and legally. Never backfeed a house through a dryer outlet: it can kill line workers and is illegal everywhere.

Step 4: plan the recharge

A battery without a recharge plan is a one day solution. Options: solar panels (400 to 800W of panels meaningfully refills a big station daily), a vehicle inverter, or simply grid charging before forecast storms. Fast wall charging matters too: current units refill in 1 to 2 hours, so even brief grid returns restore full capacity.

What should you spend?

A capable essentials setup lands surprisingly modestly right now: August promotional pricing puts 2,000Wh class units around $999 and the HomePower 3600 Pro Max at $1,799 (list $2,999) through August 31. Add a manual transfer switch installed for $400 to $900 in electrician labor if you want hardwired circuits covered.

FAQ

Battery or gas generator?

Battery: silent, indoor safe, no fuel storage, no maintenance, instant on, solar refill. Generator: cheaper per watt hour for very long outages if fuel keeps flowing. Many resilient households run a battery as first response with a small generator as deep reserve.

Will a battery system run central air conditioning?

Central HVAC surges beyond what portable stations deliver. Window units and mini splits on soft start are realistic; whole home HVAC backup means a large installed system.

What about the well pump?

240V well pumps need a transfer switch and a station with 240V output or a split phase pair. Tell us your pump’s specs and we will match hardware.

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See all Jackery power stations, transfer switches and solar panels. Free shipping over $499.99. For a sized recommendation, contact us or call (866) 777-2590.