• histic@lemmy.dbzer0.com
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    4 months ago

    You don’t want to fully drain the main battery as it would do severe damage to it and most of the 12v system has a phantom draw of power so to keep the main battery from running out they have a separate one

    • frezik@midwest.social
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      4 months ago

      Compared to what the main batt can provide, there’s barely any draw from the other electronics.

      • histic@lemmy.dbzer0.com
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        4 months ago

        That’s not the point the fact is that there is some dumbass that probably will let it sit at 0% and kill the battery

        • frezik@midwest.social
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          4 months ago

          Battery management electronics don’t let you drain lithium batteries to 0%. It’s a severe design flaw if it does.