Why does swapping order of two “dead” batteries provide more output?

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I’ve been doing it for years. Flashlight, remote, I’ll try it with anything that has disposable batteries. It dies at an inconvenient time. Open it up, swap the two batteries for each other’s position, and it works! Even if only for a bit.

Why do two “dead” batteries in the other order provide more output than their initial positions?

In: Technology

2 Answers

Anonymous 0 Comments

It’s not the swap, but the removal. It rubs a little oxidation off the terminals, reducing the contact resistance.

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