Lithium starter batteries

[Goran]

I'll check it next time when I start the car. I suspect it shouldn't drop too much if my experience with other Lithium batteries is anything to go by.
Normally it sits at around 13.2 to 13.3V when connected and boot open (so boot light on).
The 110Ah lead acid battery used to sit around 12.0 to 12.2V when I kept checking it, but it wasn't in good shape, even at only 2 years old!