Done drop test today and it is showing battery is OK. However, it is 90Ah BMW battery. Have no way of confirming if still original. Drop seen when fault happens is around 1 V from 14.5 to 13.2. Not sure how it can cause a ECU reset unless the drop itself cuts off supply to them.


Seen some 100Ah non branded Pb batterries here is uk. Do I need to code the vehicle if 100 Ah fitted?