Why do my devices that use lithium batteries often still perform well even at a low charge?

Question

Versus say, almost dead AA’s in a toy.

In: Chemistry

Answer 1

Lithium batteries have some circuitry in them that shuts off the battery to protect it. If they are discharged too low it can damage it. Double As are pretty dumb in but you get to squeeze out every bit of juice out of them without much worry