Power Outages & Off-Grid Power: The Problem Solved

A power outage becomes a manageable problem when you know three things: what you need to keep running, how many watts it draws, and how many hours you need it to last. A portable power station such as a Jackery can cover a lot of that for short outages. It is not a whole-house generator, and it works best when you plan around its limits. This page is the overview. The guides linked below go deeper on each piece.

What the problem actually is

Outages vary a lot. A storm might cut power for a few hours, while a wildfire shutoff, ice storm or grid failure can last days. Your needs differ too: a phone charger and a router are a small load, while a well pump, sump pump or medical device is a different matter.

Most people don't need to power the whole house. They need a short list of essentials. If you haven't written yours down, start with What to Power First in a Blackout: Priority List and Wattage Budget.

Watts vs. watt-hours: the math that matters

Two numbers decide whether a battery setup works for you:

• Watts (W) is how much power a device draws at one moment. A power station has a maximum output, and your devices combined must stay under it. Motors (fridges, pumps, furnace blowers) can briefly draw several times their running wattage when they start.
• Watt-hours (Wh) is how much energy the battery stores. This sets how long it lasts.

A rough runtime estimate: battery Wh × about 0.8–0.85 (to allow for conversion losses), divided by the load in watts. For example, a 1,000 Wh unit powering a 100 W load gives roughly 8 hours. Real results vary with temperature, battery age and how a device cycles on and off, so treat this as an estimate, not a promise.

Look up each device's wattage on its label or manual, or measure it with a plug-in watt meter. Don't guess for anything critical.

Your main options compared

Costs differ widely by product and region, so confirm current pricing with sellers rather than relying on a general figure. For a fuller walkthrough, see Choosing the Right Power Setup: Types & Options.

Where a Jackery fits, and where it doesn't

Jackery makes portable power stations in a range of sizes, from small units meant for phones and camping to larger ones built for home backup. Capacity, output, ports, recharge methods (wall, car, solar) and battery chemistry differ by model and change as new generations launch. Check the specification sheet on Jackery's official site for the exact model you're considering.

In general, a power station is a reasonable fit when:

• Your essentials are modest: communications, lighting, a laptop, a small fan or a CPAP.
• You want something that can run indoors with no fumes and almost no noise.
• Outages in your area tend to last hours to a couple of days, or you can recharge with solar.

It is a weaker fit when you need to run electric heat, central air, an electric water heater, an oven or a dryer. Those draw far more than most portable units can supply for long. A gas furnace is a gray area, because the blower is a modest load but has a startup surge and the details depend on your equipment. We cover it in Can a Jackery run a gas furnace during a power outage?

For specifics on models, see Jackery Models, Features & How They Work.

Safety comes first

• Never run a gas generator indoors, in a garage, or near windows or vents. Carbon monoxide can kill quickly. Install battery-powered CO alarms.
• Don't backfeed your house by plugging a generator into a wall outlet. It can injure utility workers. Whole-home connections need a properly installed transfer switch from a licensed electrician.
• Use the right cords for the load, and keep batteries away from heat, water and direct sun.
• Follow the manufacturer's manual for operation, storage and charging.

A quick planning sequence

1. List essentials and mark which are critical (medical, heating controls, refrigeration for medication).
2. Find each device's running and startup wattage.
3. Estimate the hours you need, and add a safety margin.
4. Choose equipment that covers both the wattage and the watt-hours.
5. Test the setup before an outage, and keep it charged.

The step-by-step version is in How to Build a Home Emergency Power Plan.

Medical devices: extra care

If anyone relies on powered medical equipment such as oxygen concentrators, ventilators, CPAP machines or refrigerated medication, talk with the prescribing clinician or equipment supplier about backup power before an outage. Ask whether a given power station is suitable for that device, and ask about utility medical-priority programs in your area. Jackery's general-purpose power stations are not described as medical devices, so confirm compatibility and runtime details with the manufacturers. Don't rely on estimates for life-sustaining equipment. See How to Keep Medical Devices Running in a Power Outage and Best Jackery for Seniors and Medical Backup.

Guides and answers by topic

Plan and prioritize

• How to Build a Home Emergency Power Plan: Step-by-Step Backup Setup
• What to Power First in a Blackout: Priority List and Wattage Budget
• Choosing the Right Power Setup: Types & Options

Specific needs

• How to Keep Medical Devices Running in a Power Outage
• Best Jackery for Seniors and Medical Backup: Simple, Quiet and Reliable Picks
• How to Stay Online in a Blackout: Router, Modem, Phones and Work-From-Home Power
• Can a Jackery run a gas furnace during a power outage?

Jackery research and buying

• Jackery Models, Features & How They Work
• Jackery Reviews, Complaints & Trust
• Jackery vs Alternatives
• Buying Jackery: Price, Deals & Where to Buy

Before you buy anything

If you're leaning toward a power station, read Jackery Reviews, Complaints & Trust and Jackery vs Alternatives first. Other brands may suit your loads, budget or warranty preferences better, and a fair comparison is worth the time. Prices, warranties, shipping and promotions change often. Confirm current details on Jackery's official site or with the retailer, and see Buying Jackery for what to check. For more on this site, return to the Outage Ready Guide home page.

This guide gives general information and is not a substitute for advice from a licensed electrician, your equipment maker or a healthcare professional.

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