I suppose it would show that the battery was low on charge consistently >50% & at least explain why clock was losing time. I agree though it would be advisable to invest in a trickle charger. I have two of these:Originally Posted by GERMANIKS
One for the e36 in storage & one for topping up the 6 Series every now & again. BMW will prattle on about the "unfavourable driving profile" alright. Design few in car electric system more like!