I've learnt a lot about electronics since I started circuit bending, but I know I still have a lot to learn.
Why my batteries keep getting hot is one of these things.
It's happened in my last two bending projects, where I've replaced the initial batteries with a different type of battery, and they end up heating up a lot. In my last/most current project I replaced 3 button cell batteries with 3 AAAs. The new batteries keep heating up, losing all their power, and being useless very quickly.
Could some one possibly explain to me why, how I can fix it, and why I'm such an idiot for not realising?