My 2017 EX has already had one battery completely fail after 18 months (replaced under warranty thankfully), but I have been suspicious that the battery is not being charged properly. I bought myself a lighter-socket meter, which shows the battery voltage. It appears that when I start the car, it is only charging for a few seconds (indicated by about 14.5V on the meter), then it drops back to reading about 12V, indicating that it is not charging. The only time it seems to show the 14V reading for any length of time is when I have the lights on. I know it has a smart charging circuit to save fuel, but surely a cold start needs a bit more charging than a few seconds? The battery seems to be getting a bit weaker again (slightly slower to start). Has anyone any ideas about what I am seeing?