Reply 100 of 100, by Jo22
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.
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel
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