system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do electric eels create/store their own electricity?
gpt
All animals can create small electrical impulses, it's how nerves and muscles work. The energy from food is used to move positive charges from inside a cell to outside, creating a voltage difference between inside and outside. Electric eels have evolved cells which are specialised for creating this difference. Stack thousands of these cells together and you can create a large voltage, like stacking lots of small batteries.