You could routinely charge the 12V battery with a suitable charger say overnight once or twice a week. Using a modern chip-controlled charger, it is not necessary to disconnect the battery. Some chargers (e.g. CTEK) come with a lead you can permanently connect to the battery posts and route to a han...
Try closing with the left side first, and then press in the right. That's how I do mine. The latching mechanism may not be fully shutting and may need lubrication. Also, the "emergency" release may not be completely slack, so lubricate and exercise that. My formula for lubrication is some ...
From my reading around, I have not found any mention of such changes from 2015 to 2017. The 2018 MY introduced the 100 cell-pair battery - the earlier one was 96 cell-pairs.
My practice is to do timer charges from 20 or 30% to 80%, but as mine is a 2018 MY, I have to estimate the charging time. I think it's worth the effort to extend the battery life.
Just to bring my comments up to date, I managed to get my car to show the warning at the dealers, and they applied the KIA diagnostic tablet to the OBD port. It showed Fault No B185A, which is 3-way valve open (presumably when it should be shut). We could also see the fault by using the the Built-in...
The SOH relates the current capacity in kWh to the nominal capacity (30 kWh in this case). So 102% is (30x102/100) = 30.6 kWh. 110% is 33 kWh. You can't actually read the SOH above 100% using SoulSpy, as the data is not available at the OBD connector - it just states 100%. KIA may be able to read ov...
I have a 2018 30 kWh with about 72,000 km, and my battery is about 102%, by my method of calculation, and seems to be holding that value. Our summers are not usually as hot as 40 degC, apart from the odd fluke day. I hope that helps.