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Hi guys,

simple question really.

Can I put an agm battery in place of my efb battery? And do i need to do any coding? I only have VCDS.
AGM is a lot more common than EFB in my searches online (UK).

I believe my stock battery is: 000915105EB according to ETKA as I have a J0S options code.

This is like the 3rd battery this car will have in 8 years according to the records I had of it. I checked it on a battery tester which said half life.. So I presume something is killing it but not sure what. It's been crash damaged twice before I got it so could be anything

Thanks all
Ji

Hi,

Yes you can put AGM battery into your car, just make sure you do battery adaptation in the gateway control unit 19, battery technology should be set to fleece.

Tinman wrote: Tue Nov 26, 2024 11:26 am Hi,

Yes you can put AGM battery into your car, just make sure you do battery adaptation in the gateway control unit 19, battery technology should be set to fleece.

Ok thank you that helps .. was looking at getting a used one but any is a lot more common. I presume vcds can do this as it's all I have.

Do i need to register it as new or anything?

Once again I've been caught out by this forum logging me out before I've submitted a posting!

So I'll keep this short!

Yes VCDS is all you need, just make sure that you change the technology from EFB to Fleece and not any other option for battery technology that includes AGM.

Change battery capacity as well, and alter the existing serial number by a single digit or letter, vendor/maker does not need to be altered.

Edit:- the fact that you have altered even just the serial number lets the car know that it is a new battery.