Hello,

Should the battery parameters (mainly, Ah capacity) somehow be adjusted for BCM when installing bigger sized battery?
I can see that one of the BCM calibrations changes between similarly engined vehicles, but with different RPO for battery Ah and alternator output current capacities.

Should I look for this one particular cal from vehicle with 95Ah battery, for example, if stock is for 75Ah?

13 hours ago, pupu14 said:

Hello,

Should the battery parameters (mainly, Ah capacity) somehow be adjusted for BCM when installing bigger sized battery?
I can see that one of the BCM calibrations changes between similarly engined vehicles, but with different RPO for battery Ah and alternator output current capacities.

Should I look for this one particular cal from vehicle with 95Ah battery, for example, if stock is for 75Ah?

I had a standard version of the battery, which was 75 Ah, the generator was capable of producing 150 A, and there was enough space under the hood to install a 100 Ah battery. I simply bought a 100 Ah battery and installed it, no problems.

11 hours ago, Mikluha_Maklay said:

I had a standard version of the battery, which was 75 Ah, the generator was capable of producing 150 A, and there was enough space under the hood to install a 100 Ah battery. I simply bought a 100 Ah battery and installed it, no problems.

I know it will work regardless.
But will it work "as designed"?
For example, comparing BCM cal.No.4 (Charging/Energy Storage) between 80Ah/150A/SS and 95Ah/150A/SS vehicles, shows changes are WILDLY different.