[DNK76]

And have you seen the current consumption of 2.5A on the ignition of the kl15?
Min even in the weakest bmw it is 8A-10A after the pumps are switched off, so the charger never goes into standby mode,
Even if you turn off kl15 for 20 seconds, it will not fall,
The bus during programming never goes to sleep so the voltage is always there
even in the KL15 OFF + R position
do not understand what you read,
There is no system in the charger which tests the power consumption of the battery,
only the overall power consumption in Amperes, throughout the vehicle
battery + electrical installation
 And there's always more than 2.5A
It is only when you leave the vehicle long in the OFF position. the tension will begin to fall
and after full charge (probably long) the current drops to 2.5A and goes into mode
podtzymania


You do not know the construction and operation of chargers for AGM batteries
You will be charging the battery charger with a transformer charger.
Where voltage increases as the battery charges,


You do not understand the full work of the battery in the car,
read about the tents of electricity (physics)
The alternator does not produce direct current,
The charger also does not produce direct current.
Why the alternator must maintain a voltage higher than 13.8V with a car with a 50Ah battery
As the voltage will be 13.6V it will be uncharged
Larger 70-90Ah battery requires higher voltage than 14V
sorry for the weak english