So ive got 3 kids and a large extended family. My kids are the youngest so we are constantly being given toys second hand. Looks like at the moment, ive got almost 50 toys that take batteries in some form. Most take 2, some take 4. 200 is admittedly a high end exaggeration. But ive changes batteries in hundreds of re-homed toys at this point and I have never come across a single set of recharable batteries.
When my kids grow out of them, we usually give them to someone else, as they were given to us.