Yes, Lithium batteries are a new technology and they behave differently than Lead Acid. But they have overriding advantages such as, weight, space, and power production. A Lithium NMC (LiNiMnCoO2) that is rated at 5KWH only weighs 63 lbs. That’s equivalent to a 12V 400AH lead acid battery bank that weighs four to five times as much and has a cycle life that is four to five times shorter.
Do Lithium batteries require different supporting devices, and are they more temperature restricted? Yes, but I my opinion it’s worth it.
I agree the Lithium technology is only going to get better, and hopefully less expensive in the future. But, it’s here to stay.