Power Station Sizing Calculator

How many watt-hours do you actually need?

Tick what you want to run, set the hours, and get a size in Wh and W — then only the stations that cover it, with a one-click cart. No spec-sheet maths.

For anyone shopping for outage backup, camping or work-from-anywhere power who does not want to overbuy.

  • Checked against the maker's own listing
  • Compare in your cart before you pay
  • Free, no sign-up to use
Free calculator · 30 seconds

Power Station Sizing Calculator

Pick your devices and hours; we do the arithmetic and show only stations that cover the load.

Start here

The 1 kWh class, side by side

Ranked for the decision, each with the reason to choose it and the reason to skip it.

2 kWh, compact
2 kWh, compactAnker
Biggest here (2 kWh)

Anker SOLIX S20002,010 Wh, 1,500 W

Why this one

2,010 Wh LFP with 1,500 W continuous (3,000 W peak); the listing states a 10,000-cycle battery, 6 W idle draw and 35.7 lb.

  • Capacity2,010 Wh
  • Output1,500 W (3,000 W peak)
  • BatteryLFP, 10,000 cycles (listing)
  • Weight35.7 lb

Skip it if: You need more than 1,500 W at once.

Home backup + campingJackery
02

Jackery Explorer 1000 v2

1,500 W AC (3,000 W surge), LFP battery rated by Jackery for 4,000 cycles to 70%, about 23.8 lb, with a 1-hour emergency charge…

See every pick

Side by side

1 kWh class at a glance

StationCapacityAC outputWeightCart
Jackery Explorer 1000 v21,070 Wh1,500 W23.8 lbAdd to cart
Anker SOLIX C1000 Gen 21,024 Wh2,000 W11.3 kgAdd to cart
BLUETTI AC1801,152 Wh1,800 W—Add to cart
BLUETTI Elite 100 V21,024 Wh1,800 W25 lbAdd to cart

From each product page. "—" = not stated in the text we pulled.

Starter kits

Buy the set, skip the guesswork

Home backup

Outage Essentials

One 1 kWh-class station covers a router, phones, lights and a laptop for a day.

Add all 1 to cart
Big + small

Power + Pocket

A high-output station for appliances plus a small one to keep in the car or a go-bag.

Add all 2 to cart
Decide fast

Compare in Cart

The two BLUETTI 1 kWh options in one cart — remove the one you do not need.

Add all 2 to cart
Why trust the picks

What we check — and what we never claim

Capacity and output are as stated by sellers; real runtime varies with load, temperature and age.

Maker-page specs

Wh, W, battery chemistry and weight are copied from each product page.

Honest maths

The calculator is arithmetic with the assumption written down. It is not a test result.

Safety first

We repeat the maker's rule: no connecting to a home panel without a licensed electrician.

How we pick

The Outage Plan

Get the one-page outage plan

A printable checklist: the loads to power first, how to read a label in watts, safe use rules — and three emails that tie your calculator result to a pick.

One email now, three useful ones over the next week. Unsubscribe any time.

  1. 1
    Your one-page outage planfirst loads to power + how to read watts
  2. 2
    How to read your sizing resultWh for hours, W for at-once
  3. 3
    The 1 kWh class, honestlythree stations and who they fit
  4. 4
    Safe use — the short listpanel rule, ventilation, heating loads
FAQ

Straight answers

Short, honest, and in plain English.

How big a power station do I need?

Add up the watts of what you want to run at the same time (that sets output) and multiply by hours (that sets capacity). The calculator does both.

Can it run a fridge?

A fridge cycles on and off and has a start-up surge; check its energy label and the station's stated surge rating. We do not guess a number.

Why LiFePO4/LFP?

It is noted for cycle life; Wikipedia notes durability in the thousands of cycles. Sellers state their own cycle figures on the product pages.

Do you test the stations?

No. We copy stated specs from product pages and label them as such.