Why does a laptop say it’s at 6-8% charge, and then it dies, but when it’s at a higher charge, going from 60% to 59% takes a while?

Question

Why does a laptop say it’s at 6-8% charge, and then it dies, but when it’s at a higher charge, going from 60% to 59% takes a while?

In: Technology

Answer 1

The power supplied by a battery is non-linear.
We do our best to linearize it to make it intuitive to use but it isn’t easy especially not when you’re using the cheapest sensors known to mankind for the measurements.
Pretty impressive all of them don’t just explode.