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Doubt CR2032 battery

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barretff7:
I have a PCB with a CR2032 battery soldered or inserted into the PCB and this PCB is stored after many years in storage and the CR2032 charge goes to 0% will this battery go into chemical enhancement to generate an oxidative corrosive compound and will it leak from the battery corroding the PCB?

Enthalpy:
I've had many motherboards stored for well over 10 years, some had emptied their battery below usable voltage for years, and no CR2032 battery leaked.

Hunter2:
If the board is not used, why not remove the battery to avoid any risk.

barretff7:
Does this CR2032 battery leak and corrode the PCB or not? what is its chemical composition and if it turns into an oxidative corrosive compound? some people say yes other people say no but i have kept the PCB with the CR2032 inserted

Borek:
Yes, the battery can leak, yes, the electrolyte can speed up the corrosion. Plenty of images if you just try to google them.

No, "can" doesn't mean "it will". If the PCB is in any way valuable or you expect it to be difficult to find when/if you need it in the future, removing the battery mitigates the risk.

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