About removing and replacing barrel batteries..

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Reply 100 of 100, by Jo22

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Before it dies, I would like to say that a diode can also safe the motherboard.
If the battery shorts internally due to what ever reason, a small glass diode (1N4148 or similar) can prevent a short circuit.
Because, in the unlikely case the battery is shorted, and the diode successfully prevents the PSU from charging the battery, the diode acts as a fuse.
It's not a proper fuse by any means, but it's a weak part that can fail under such circumstances (good thing).

Edit: Small edit.

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