[dimitrev]

Hi guys,

I've been searching though threads about this for the last week or so and I can't seem to find a concrete answer, so I thought I'd ask here. Hope you can help.

I bought a used E61 recently and it had had to change the battery as it was basically dead. My mechanic installed a Varta 100Ah non-agm battery, and I started getting strange errors. After getting my feet wet with coding the car I've since realized that you need to register the battery, but 100Ah batteries are not an option for this vehicle, at least on first glance (90Ah or 110ah).

I've seen some curt replies to similar questions where people suggest adding it to the vehicle order via NCS. Except that I don't know if I can "make up" the VO code for a 100Ah battery or not i.e. and here is my first main question:

if I write FA -B100 to CAS and LMA, will that work? to effectively "create" a KLASSE_BATTERIE 100Ah // option

If that is not an option, then I have 2 alternatives: 1) get a new battery that is either 90Ah or 110Ah, or 2) simply live with the 100Ah, and an incorrect charge map.

I have in the meanwhile coded and registered my battery as 110Ah and this has resolved my battery discharge and other related codes, i.e. car works perfectly fine now. However I am worried that the car will now overcharge the battery. So my second question is this:

how bad is it to have the charge map off by 10Ah over? If it will simply shorten the life of the battery somewhat, I can live with that, as I only intend to keep the car for about 2-3 years, but I am worried about an explosion or fire hazard.

Any help in this regard will be much appreciated.