I have had starting problems, stemming from Sept last year when I went to Sweden for 2 weeks. My dash cam is set to be active when parked and I forgot to change the setting while I was away. Came back to a flat battery, really flat! The starting problems have been accelerated by this cold weather so my car was in for an MOT today (6 month deferred due to covid lockdown), I asked for one of their free battery checks and after putting a 'gizmo' on the battery and running through the sequence of tests it came back that the battery was at 30% capacity. A new stop start battery same specs as the Kia one came out at £258.00 fitted, a bit steep but I knew that stop start batteries were not cheap. 5 years, I think is quite good for a high discharge battery life, not so impressed with the price of a new one though. No reprogramming or having to 'tell' the car through the ODB port, just plug and play.