[willisodhiambo]

For the F series 13.8V is a little too low voltage,
At one time, on a low battery I had set this voltage to turn off the ignition because of the discharge of the battery.
Increasing to 14.8V and no such problem
BMW to the F series, G recommends 14.8V (without F80 Li-ion ,14V)
Series F, G or E series with AGM, (S1CCA AUTO START STOP FUNKTION), (S1CDA BRAKE ENERGY REGENERATION)
Phase intensive battery charging, voltage from 14.6 to 14.9V (engine braking weak battery after startup)
Voltage Support Phase (Acceleration Phase or Battery Charge Less than 13.8v and above)
There are also average values of 14V-14, V voltage used depending on the outside temperature and the battery charge level
therefore, sometimes the charger may occasionally indicate a low battery or turn off the ignition,

sorry for the weak english

Infact yesterday I noticed my power maintainer gives 14.2v but ISTA shows 13.5volts!! Ill bump it up to 14.8v on the maintainer so that I have 14v or 14.2 volts while programming. Car seems ok now. Did not see battery discharge yesterday. Thanks.