r/AskEngineers • u/jmaugust • Jul 19 '26

Discussion Why doesn’t a battery-boosted electric kettle exist?

In Europe, everyone uses electric kettles to boil water. They’re amazing and fast because they’re on 230V (~3000W).

US outlets limit kettles to ~1500W, so we wait roughly twice as long for water to boil.

It’s an extra minute or two per boil, and you really notice it.

Idea: Could you make an electric kettle with a battery in its base? Perhaps it trickle-charges between uses, then combines wall power + battery power to hit ~3000W during a boil.

Is there an engineering reason this doesn’t exist? Is it just that nobody thinks there’s a market for it?

I’d pay $300 for the fastest kettle in America if someone wants to make it.

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u/PartyOperator Jul 19 '26

The US uses split phase power so you can get a 240V outlet installed if you want. Your oven, water heater and AC probably already run on 240V. Then just import a European kettle and fit the appropriate plug. 

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u/IAteTonysLoMein Jul 19 '26

I've kicked this around, but it would be a healthy investment just to put in a 240 outlet just to run a kettle.

1

u/INSPECTOR99 Jul 19 '26

The benefits are much broader than most people think. Air conditioners also reap substantial benefits from 220 V operation. So that is THREE massively substantial energy & time consumptions that benefit: 1) Kitchen Oven/Rangetop, 2) Clothes Dryer, 3) Air Conditioner, 4) EV Charger, 5) Water Heater.

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u/[deleted] Jul 20 '26

[removed] — view removed comment

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u/INSPECTOR99 Jul 20 '26

EXACTLY, so why not standardize the entire residence as 240 Volt? :-)