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Atilla
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Interesting to note that Kia are dropping the 12v lead acid battery and using the 1.56kWh lithium battery instead. These kind of hybrid systems usually limit the amount of energy available to about 2/3 of capacity so there would always be enough for start up. A bit of software energy management and hey presto, no big lump in the bonnet to go flat/get replaced/cart around.

While I can get why manufacturers of Hybrids would want to use lead acid rather than a dedicated 12v lithium battery, it seems enviable when the R&D catches up with the peripheral systems on EVs the hefty lead acid pack has got to go.

Hybrids paired with Atkinson cycle engines usually have 48v battery packs so they are presumably stepping down voltage and running standard 12v equipment off this.
 

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Considering all the tech in some cars, 12v batteries seem lazy from an engineering point of view. ,
 
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