Quote:
Originally Posted by Phlonx
I appreciate your input but I have thought about it and all of it is a little weird. I've read that no matter if it is the same battery or different, the alternator adapts to not only the current/voltage/amps etc. of the battery but it's age and condition as well and thus it needs to be coded/registered with the car no matter what  |
You are correct. An old battery may still be performing to tolerances, but it is not performing nearly as well as a new one. Its a difference of a couple volts and a few amps on the circuit. The car adapts charging and discharging rates of the battery to meet the current condition of the battery. Since a new one performs to a different spec than an aged one, you need to have the car recoded.