I’d just go with new flooded golf cart batteries. Mine last about 3 years of semi neglectful use. Can go through 3 sets for the price of AGM and I can’t even imagine how many before matching the cost of lithium! Plus the flooded ones give you plenty of notice that they are approaching their demise. My experience with AGM is that they work great until one day they don’t work at all. But, whatever works best for you is what you should do.
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