system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Why do batteries temporarily regain life when you rearrange them?
gpt
Batteries are subject to the 'rebound effect'. When you disconnect a battery, the voltage recovers, often to a level not that much less than the fully charged voltage. When you reconnect the battery, it can provide power at a high-ish voltage for a few minutes.

An explaination of this effect may be that a flat battery does not have much active chemicals in it. The active chemicals near the terminals gets fully depleted, and, if you disconnect it, some migrates closer to the terminals, allowing the voltage to recover.