20 minutes ago, Tilt said:

My near 4 year old battery was left unused for 10.5 days recently and the voltage reading was 11.9v before attempting starting the car. (mentioned in another thread, re- charging)

It started absolutely normally. I believe that 11.9v is around 40% charge (AGM/EFB), though another mention was 25%.

Sorry i should have mentioned the 50-70% is for SOH not charge.

Update

Car went to dealer on Friday for full diagnostic as having problems with start/stop Android auto traffication and infotainment result

New battery fitted said that can cause all sorts of problems won't get a full test till Tuesday will update then.

On 26/10/2025 at 20:21, Tonyduncan said:

Update

Car went to dealer on Friday for full diagnostic as having problems with start/stop Android auto traffication and infotainment result

New battery fitted said that can cause all sorts of problems won't get a full test till Tuesday will update then.

Update

9 hours driving today start/stop worked every time so battery was the problem.

3 hours ago, Tonyduncan said:

Update

9 hours driving today start/stop worked every time so battery was the problem.

Identical to mine then. It’s been perfect since.