Larry, I am not an expert regarding batteries, or much else, for that matter.
I would recommend you read this thread.
There are some folks who are experts and I bow to their knowledge.
My experience with Li batteries is limited to power tools and cell phones where they work very well.
I am still a fan of the Odyssey AGM battery for the boxer.
I'm a steam and coal guy when it comes to generating electric power...does that tell you anything about my level of knowledge?