For later cars it is. you generally need a scanner to go in and reset the battery learning curve.
I *believe* that this then modifies the charge system to keep the battery in optimum state.
But its unlikely on a pre 2010 car. I thought I had it, but I didnt. It is also wise to install a 'keeper ' battery temporarily when disconnecting the battery, else you may have to reset all sorts of electrical stuff.
I would have thought unlikely if your car is much the same the same age as the battery.
Tim
Yes for a 10 year old VW Passat:-(
Trick is to maintain the supply while you do the change over. Somewhere there will be a U tube video showing how if your vehicle manual isn't clear. I used my lawn mower battery.
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Perhaps the mechanic had the radio on while doing the work, left the lights on longer than needed when checking them for the MOT, and the interior lights were on because the doors were left open. The battery was in poor health to start with, then they ran it flat trying to start the car and stuck it on fast charge. The total discharge and fast charge were the final nails in the coffin. Perhaps.
I *think* you’re thinking of coded radios. On new cars the ECU needs to be programmed with the battery type and capacity (and possibly other stuff too) to optimise charging.
Tim
Unlikely any mechanic uses the radio in the vehicle he is MOTing rather than one in the workshop.
My car radio was usually retuned to Radio 1 when I got it back after a service
That's just nasty.
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