Long Life for Diesel Car Battery

Most often diesel car battery fails earlier than the petrol version mainly because of the necessity of cranking more for compression ignition. I would suggest that if you can be patient and cautious when starting from cold condition, the battery will not be fatigued.
AS YOU SWITCH ON WAIT FOR THE HEATER LIGHT AND THE RELAY TO CUT OFF BEFORE YOU CRANK. DEPENDING ON THE COLD CONDITION CRANK ONLY AFTER YOU SWITCH ON HEATER MAYBE A COUPLE TO SEVERAL TIMES.
slowly you will come to understand your engine and after the heater relay has cut offf there is ample battery amperage on the battery to turn the starter with ease and maybe a single revolution start.Once you engage the heater and do this process do not switch off the engine unless it is warm and running to the desired temperature.
Doing such a practice will make the battery regain lost power without a drain in the morning and possible early deterioration.