So it looks like the Ioniq hybrid has no lead acid battery at all, a first for mass market cars.
Instead, they have a built-in 12v lithium pack attached to the main hybrid battery/traction battery. That means no float charging an inefficient but tough battery chemistry all the time.
https://www.caranddriver.com/news/ho...tarter-battery
I can not find the source, but I read an article once that stated that less than 20% of the energy that goes into a typical car battery ever comes back out due to the Peukert effect and the constant maintenance of a full SOC. Does anyone have a citation about that?
Sam