A lot of driving from Dubai Production City is short: to the mall, to Sports City, to a school in a nearby community. A short trip with the AC on full does not return the charge the starter took out. Do that for months and the battery sits half charged, which hardens the plates and cuts cranking power.
Heat does the rest. In the UAE a car battery commonly lasts about 2 to 3 years, and a car parked in the open ages faster than one kept in a basement. A resting reading near 12.6V is healthy. Around 12.2V the battery is only half charged, and under 12.0V it is discharged.