Quote:
Originally Posted by SergeyB
Thank you for valuable information.
I think I have and interesting question that I hope could be answered here.
My original battery type was AGM. Two years ago I replaced a battery at official dealer to the regular one (white case). I ensured that they did the registration. Everything worked fine like engine start.
However I had a feeling of battery under charge which proved itself recently (discharge warning) when I leaved radio on without running engine while cleaning interior and closing/opening the doors perhaps preventing car from entering sleep. This was not too long like about 30 minutes.
I decided to check battery status and discovered that my regular battery is registered as AGM (capacity is the same).
What could be done in this case?
1) Code the correct type in relevant modules (with or without VO)?
2) Code the correct type with higher capacity with registration?
Thank you!
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1) yes, you should IDEALLY code the car to see the battery as AGM. AGM will most likely have slightly different charging profile which might help keep it charged better. You probably won't notice anything different though.
2) registration and coding are two completely different things. registering a battery tells the car a NEW battery is installed. Coding for the correct capacity (Amp Hours) has to do with how big the battery is. Is it 80AH or 110AH? 110AH will last longer with the car off and the door open. Our cars pull a lot of amps to run the various computers, radio, fans, lights, etc. 30 minutes with the car door open can easily discharge a battery. IF the car has a 100AH battery, but it's only coded for 80AH, you may never be getting the correct charge on it.