Posted February 13, 200421 yr will my alternator be able to upkeep a semi truck battery? getting one soon so i need to know. thanks.al
February 13, 200421 yr Author umm, not so sure, kid in my class, his dad drives semi's so im getting it second hand, and looking at it on tuesday.al
February 13, 200421 yr Hey. Not exactly the same thing, but I have a stock 80 amp alt and a HUGE group 31 optima yellow top, not the normal small one. I've never had any problems since I did that and the big 3. You can see my equipment in the sig. I have a little bit of dimming but nothing bad.
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