I just moved my old yellowtop the to trunk and put in a new starting battery.
When the car starts it shows 14v but after a while it drops to 13.3v. Would this mean my yellowtop is drained? I've had it for probably a good 5 years. I had a xs power d675 before but I figured the yellowtop would be better even though it is older.
This is with no load other than normal car functions.