Glider,
With all due, if you have a Yuneec aircraft that performs well you should not be concerned about a future battery supply as standard batteries are easily adapted. Such is not the case with the brand you are contemplating. You use theirs or none at all.
All this excitement about lack of Yuneec batteries is a lot of drama about nothing. Anyone with the desire can walk away from Yuneec or other hard shell batteries in a heartbeat and suffer no ill effects.
I'm talking about finding a good battery today, not the future.
Most of my batteries are the factory units and the life is about gone. I had two that got ruined from water (rain) getting in the backpack and shorting them out so promptly drilled drain holes.
I then bought a few when on sale, and a couple Ultrax. Recently I bought a Yuneec brand that was DOA. It was "on sale" at a popular online reseller.
At this point it isn't known which ones are still worth using, but I'm simply not paying $140 for a plain 4s battery whose actual value is < $40 and how old are they? There's no reason these batteries to be priced so high. Also, I think many if not most Yuneec branded batteries left for sale are already past their prime.
Carolinadronz was for a long time THE place to go for Yuneec stuff. Now you can't even buy a battery for the H. Such is the case for most dealers. Again, the "on sale" Yuneec brand batteries are old stock on their last leg IMO. I question if Yuneec is providing new batteries at all.
It would be interesting to know why Tattu stopped making batteries for Yuneec.