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What Size Jackery Do I Need? A Simple Sizing Guide
Short answer: Add up the watt-hours you'll use between charges and pick a Jackery with about 30% more capacity than that, with an output rating above everything you'll run at once. As a rule of thumb: phones and a CPAP for a weekend need 300 to 500Wh, a fridge through an overnight outage needs about 1kWh, and a fridge, freezer, Wi-Fi and lights for a day or more need 2 to 3.6kWh.
Updated November 12, 2026. Prices checked November 12, 2026.
Quick Answer by Use
| What you want to power | Capacity you need | Jackery to look at | Price (November 12, 2026) |
|---|---|---|---|
| Phones, tablets, cameras on a day trip | 100 to 300Wh | Explorer 100 Plus or Explorer 300D | $109 / $209 |
| Weekend camping, CPAP for one night | 300 to 500Wh | Explorer 300 v2 | $299 |
| 12V camping fridge, laptop, lights for 2 to 3 days | 1 to 2kWh | Explorer 1000 v2 or Explorer 2000 v2 | $489 / $999 |
| Fridge, Wi-Fi and lights through an overnight outage | About 1kWh | HomePower 1000 Plus v2 | From $669 |
| Fridge, freezer, Wi-Fi, lights and TV for a day | 2 to 3.6kWh | HomePower 2000 Plus v2 or HomePower 3600 Plus | $1,199 / $1,899 |
| Well pump, central AC or other 240V loads | 3.6 to 5kWh+ | HomePower 3600 Pro Max or Explorer 5000 Plus | From $2,929 / $3,499 |
How to Size a Jackery in 4 Steps
- List your devices and their watts. Check the label or charger, or use the typical figures below. A plug-in watt meter is the most accurate.
- Multiply watts by hours of use to get watt-hours (Wh) for each device, then add them up.
- Divide by 0.85 to allow for inverter losses, then add about 10% as a buffer. That's the capacity to shop for.
- Check output. Add the running watts of everything that will run at the same time. That total must be below the station's rated output, and the biggest motor's startup surge must fit under the surge rating.
Typical Watts for Common Devices
| Device | Running watts | Typical daily use | Watt-hours per day |
|---|---|---|---|
| Phone charge | 10 to 20W | 2 hours | 20 to 40Wh |
| Laptop | 50 to 100W | 4 hours | 200 to 400Wh |
| Wi-Fi router | 10 to 20W | 24 hours | 240 to 480Wh |
| LED bulb | 8 to 10W | 5 hours | 40 to 50Wh each |
| CPAP (no humidifier) | 30 to 60W | 8 hours | 240 to 480Wh |
| 12V camping fridge | 40 to 60W while running | Cycles on and off | About 500 to 1,000Wh |
| Full-size fridge | 100 to 200W while running | Cycles on and off | 1,000 to 1,500Wh |
| Chest freezer | 50 to 100W while running | Cycles on and off | About 700 to 1,000Wh |
| TV (50 in LED) | 60 to 100W | 4 hours | 240 to 400Wh |
| Coffee maker | 800 to 1,200W | 10 minutes | 130 to 200Wh |
| Microwave | 1,000 to 1,500W | 10 minutes | 170 to 250Wh |
| Space heater | 1,500W | 2 hours | 3,000Wh |
Daily figures are estimates. Your own appliances' labels or a watt meter will give you better numbers.
Worked Examples
Weekend camping with a CPAP
CPAP 40W × 8 hours = 320Wh per night, plus phones and lights at 100Wh, is 420Wh a day. Divide by 0.85 and you need about 500Wh for one night, or 1kWh for two nights without recharging. An Explorer 1000 v2 ($489, 23.8 lb) covers two nights; an Explorer 300 v2 ($299) covers most of one night without the humidifier. More picks in the best Jackery for camping.
Fridge, Wi-Fi and lights through an outage
Fridge 1,200Wh + router 360Wh + four LED bulbs for 5 hours at 200Wh is 1,760Wh a day. Divided by 0.85, that's about 2,070Wh for one full day. The HomePower 2000 Plus v2 (2,048Wh, $1,199) gets close to a full day, and adding a Battery Pack 2000 Plus v2 ($999) doubles it. See fridge runtime by model.
A home with a well pump
A 240V well pump draws about 1,000W running with a big startup surge. You need 240V output and plenty of surge, which points to the HomePower 3600 Pro Max (4,000W at 240V, 8,000W surge) or the Explorer 5000 Plus (7,200W, 14,400W surge), connected through a transfer switch.
Capacity, Output and Price for Every Size
Freedom Room prices on November 12, 2026.
| Model | Capacity | Output (rated / surge) | Weight | Freedom Room price (November 12, 2026) | Cost per kWh |
|---|---|---|---|---|---|
| Explorer 100 Plus | 99Wh | 128W USB only | 2.1 lb | $109 | $1,101 |
| Explorer 300D | 288Wh | 300W USB-C/DC only | 5.5 lb | $209 | $726 |
| Explorer 300 v2 | 288Wh | 300W / 600W | 8.2 lb | $299 | $1,038 |
| Explorer 1000 v2 | 1,070Wh | 1,500W / 3,000W | 23.8 lb | $489 | $457 |
| HomePower 1000 v2 | 1,024Wh | 1,500W / 3,000W | 23.4 lb | $549 | $536 |
| HomePower 1000 Plus v2 | 1,024Wh | 1,800W / 3,600W | 23.8 lb | $669 | $653 |
| Explorer 1500 v2 | 1,536Wh | 2,000W / 4,000W | 32 lb | $849 | $553 |
| Explorer 1500 Ultra | 1,536Wh | 1,800W / 3,600W | 38.6 lb | $1,079 | $702 |
| Explorer 2000 v2 | 2,042Wh | 2,200W / 4,400W | 39.5 lb | $999 | $489 |
| HomePower 2000 Plus v2 | 2,048Wh | 2,400W / 4,800W | 41.4 lb | $1,199 | $585 |
| HomePower 3000 | 3,072Wh | 3,600W / 7,200W | – | $1,499 | $488 |
| HomePower 3600 Plus | 3,584Wh | 3,600W / 7,200W | 77 lb | $1,899 | $530 |
| HomePower 3600 Pro Max | 3,584Wh | 4,000W at 240V / 2,000W at 120V | 73.9 lb | From $2,929 with SolarSaga 500X (unit alone is out of stock) | – |
| Explorer 5000 Plus | 5,040Wh | 7,200W / 14,400W | 134.5 lb | $3,499 | $694 |
Do You Need Solar Panels?
Only if you'll be away from an outlet for more than one charge. As a rough guide, each 100W of panel puts back about 300 to 500Wh on a sunny day. A 200W panel roughly refills an Explorer 500-class station in a day and covers much of a fridge's daily use. See Jackery solar panels, from $129 for the 40W SolarSaga 40 Air to $999 for the 500W SolarSaga 500X.
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FAQs
What size Jackery do I need for my house?
For essentials such as a fridge, Wi-Fi and lights, plan on 2 to 3.6kWh, like the HomePower 2000 Plus v2 or 3600 Plus. To run 240V loads or most of the house, look at the Explorer 5000 Plus with a Smart Transfer Switch.
What size Jackery to power a refrigerator?
At least 1kWh for an overnight outage. A 2kWh model covers a day or more.
Will a Jackery run a space heater?
Yes, on models rated 1,500W or more, but not for long. A 1,500W heater uses about 1.5kWh an hour, so even a 3.6kWh HomePower 3600 Plus runs one for about 2 hours.
What size Jackery should I buy for camping?
Most campers do well with 300Wh to 1kWh. Choose the Explorer 300 v2 for phones and lights, or the Explorer 1000 v2 for a CPAP or 12V fridge over a weekend.
What will a Jackery 5000 power?
Almost everything in a typical home, including 240V appliances, for hours at a time. See Explorer 5000 Plus runtimes.
Need help choosing? Call 512-777-0154. Every Jackery at Freedom Room ships free.