I'm guessing it is a lead acid one. The newer styles especially the AGM ones die without warning. On my CX it failed in just over 2 years but before I got it the car did 1900 miles in 2 years including sitting at a dealers for 11 months. Central Morgan the dealer swore it was on a conditioner.
On the Wed it was fine on Sat I got the overseer warning light.
I really didn't suspect the battery & got the AA out. Their technician said it was quite common to fail after 2-3 years for AGMs if not used.
