Quote:
Originally Posted by Spartan 1771
...spends the majority of its time in the garage hooked to a battery tender. Are these conditions good for a dry cell...
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To answer your question, this condition is perfectly fine for AGM batteries. However, modern "smart" chargers have AGM/Cold specific settings that push a slightly higher voltage.
Optima isn't the only provider, plenty of other brands you can pick from. I purchased a couple of Bosch AGM on sale for about $130 ea. after tax for my Z and G. I currently use a Noco Genius charger. Had a CTEK until wife accidentally destroyed it.
Also, some high end shops keep customer cars on smart charger at all time.