Hacker News Reader

The battery would be emitting energy because you're discharging and recharging it as you drive around.

Under the blankets?

Presumably the premise is for the blanket to insulate the battery, i.e. the thing that needs to be warm, not the windshield.

But even once the car is stationary, a blanket would help it retain the heat generated while driving, or generated from charging now that it's plugged in.

I wonder why EVs don’t have a built in functionality to keep the batteries warm in cold weather. Presumably that would consume a bit of energy to keep batteries functioning in full capacity.

They do. My BMW does for example.

Reply on news.ycombinator.com