Quote:
Originally Posted by al74dart
Just a note on charging batteries. The recommended maximum charging rate should never exceed 10% of the battery's amp hour rating. If you have an 85 amp hour battery than 8.5 amp is the fastest you want to charge it. The above is for wet acid batteries. If you have a gel cell or AGM or other not wet battery you will want to charge it at an even lower rate, see battery manufactures recommendation. I usually try and not exceed 5% of the battery rating if possible. I was in the marine business and many of the boat batteries I had to replace were quick charged and damaged the batteries over time thus shortening the battery live.
Al
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I TOALLY DO NOT KNOW THE TRUTH HERE!
But 2 Optima representatives have told me that Optima Redtops must be charged at a 1 hour rate or Faster. They recommend charging at 100 Amps for their standard starting battery.
As an update I still have a useless Optima red top that they (Advance auto parts) will not take back. I've been running the lawn and garden battery in it for quite some time;only issue so far was the tech at Lonestar who wasn't sure if a lawn and garden battery was legal for competition, quick phone call cleared that up and we ran the car.