Orange battery light after ignition turns off

[Paydirtdog]

Originally Posted by giovane

Be aware when you change the battery by yourself, it also needs a registration on the module.
Read this, it's valid for all BMWs
More detailed explanation on battery registration - BMW 3-Series (E90 E92) Forum - E90Post.com

I've read elsewhere on this forum that the black batteries are the older lead acid, and the white ones are the newer AGM type. My understanding is that you can replace the black ones with the same type and not have to register or reprogram, but if you replace it with the AGM type, you do. Not sure if this is correct. I wish someone would clear this up for me.