Originally Posted By: 901Memphis
Originally Posted By: friendly_jacek
Measure the voltage first. Technically, if it's below 12.6V, sulfation will start and need to charge. I doubt using car once per week is a problem, unless you have some crazy parasitic current.
This is not true, sulfation doesn't even begin til you get below 12.40 volts or 1.225v per cell.
A battery at 12.6v after resting will be over 90% charged, and is very good.
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If it's above 12.6v you're fine.
Look, I didn't just make up the number. I saw it published.
I tell you what. Find the reference for the 12.4V value and I'll believe you. Don't go edit wiki though.
Now, it the 12.6V value was wrong, why did you recommend it in your comment at the end?
