This is what the inside of a battery, alternator, and starter looks like!
One of the most interesting youtube channels around the water jet channel did an entire video on car parts. They replaced some stuff, so they decided to cut the old ones up. First, they put a battery on the chopping block, and they cut it and showed whats inside, and it’s probably not what you would expect. Next, they cut an old alternator, and it starts spinning so fast they have to stop and tie it down. You can see how it generated power. Last they put and old starter up and go through it without a problem and give us a peak as to what’s going on inside!