RDMueller wrote:
The thing I'm still wondering is if equalizing is even something you should do to a starting battery. Especially if it was never deep cycled, i.e. nobody ever left the dome light on overnight, never even sat in the vehicle for an hour listening to the radio with the engine off. Only used for starting duty it's entire life. Would there be any reason to equalize, or would it do more harm then good, especially considering the paper thin plates an SLI has?
Under these conditions, I'm guessing it is not sulfation that eventually kills the battery. More than anything, it's probably heat. That's a pretty punishing environment, under the hood. Maybe why we are starting to see some cars with the battery in the trunk.
I've certainly never done it.
My truck's alternator charges at 14.1V, hopefully that's enough.
But deep discharge does kill them. Happened in storage once, they were dead as a doornail. Didn't even try to repair/equalize, they were replaced.