[48V]

I have a Silverado (5.3L) that I am installing a large 48v electrical system in, to power most belt drive accessories. One of the major things I want to do is get rid of that giant lead battery!

Now, let's say I replace the starter battery with a 4 cell lithium ion battery? That's 16.8v vs 12 or less. It would not power anything else, I don't want 16 volts for anything else. Nothing but starter.

Is this going to damage a typical 12v American style starter motor? I know they sell 14 and 16 volt lead acid batteries for racers, and they claim it works fine, but is that true? It would not be the end of the world, starters are cheap and easy to replace, but I don't want to get stranded somewhere.

I might just try to leave the battery at 16.0v, not quite as hot and that way I don't have to float charge the lithium battery at max voltage.

I could use a 12.6v 3 cell, or 14.4v Lifepo4 batteries instead, but I would like it to crank super fast.