Car Batteries
Buick Regal

What voltage should a buick regal 31 1990 v6 be mine charging at 15 volts is this to much as battery will no longer hold charge?

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Wiki User
May 01, 2005 10:02PM

The system is a 12 volt. The maximum charge rate should be less

than 15 volts. The charging system needs to be tested, to see which

component is NOT working properly. It could be the alternator, the

voltage regulator, or the battery. The test is called a charging

system check. Jim Bunting. Toronto.

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