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The problem here with that is, the car doesn't know you've just installed a wet cell battery, and it has no way of telling. All it sees is voltage and state of charge. Its algorithm to maintain the battery is for AGM type batteries. That algorithm is what its referencing to maintain the battery. Once this wet cell you've just installs reaches a certain parameter its monitoring for charge rates, it won't know there's a wet cell installed. It will charge at whatever rate its calibrated for, which is most of the time, too much for a standard wet cell. An over voltage/charge to a wet cell causes the acid to boil and vent. Causing corrosion around your terminals and venting fluid outside the vehicle. This degrades and damages the battery, along with its service life. Now if the vehicle came OEM with a wet cell battery, then you could more probably upgrade to an AGM, but the charging system still won't maintain it properly, but with less effect as if you were to downgrade from and AGM to wet cell.
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