Join Date: Feb 2010
Location: Narragansett Bay
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Re: Charging: Gel vs AGM
All chargers that I've seen that will work with different types, have a manual switch to tell it which it is charging. I do not believe you can use a Gel charging profile to properly charge an AGM, or vice versa.
Regardless of how you charge a battery, it will take a charge and work for a bit. The issue with charging properly is that you maximize its longetivy or don't ruin the battery in the process. For example, you can boil bubbles into Gel electrolyte by overcharging or sulphate an AGM by not fully charging it.
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