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@umpqua In my research/learning spawned from this post, I’ve learned that there are a couple reasons why you don’t want to charge lithium directly from the alternator. You want to put a DC to DC in between that can properly charge the battery.
Here’s a link I came across, but there are other sources too.
As for wishing you had 200Ah, just add another 100Ah battery in parallel to your existing one. Make sure when you initially set them up that they are balanced, but after that you should be good to go for a while.
Here’s a link I came across, but there are other sources too.
Careful - Alternator Charging Lithium - Victron Energy
Charging lithium batteries from an alternator, be that in a boat or vehicle, presents some challenges when compared to the straightforward nature of charging lead based batteries. The video in this blog highlights these lithium challenges and shows you what can happen when things go wrong –...
www.victronenergy.com
As for wishing you had 200Ah, just add another 100Ah battery in parallel to your existing one. Make sure when you initially set them up that they are balanced, but after that you should be good to go for a while.