Giving up trade secrets and tech transfer are what I call "no win-win". It's a win-lose situation for the long run that China will lose all its advantage to the US in batteries industry. Further, I've heard some time about China holding some patents regarding battery which are going to expire soon. I wonder what are those patents?
There have been universal industrial espionage ever since there were industries. Now it's harder and harder to keep trade secretes because of the problems with cyber security. The only way to stay ahead of your rivals with certainty is to out-innovate and out-compete against them. I think China is capable of doing so with NEV technologies now and in the foreseeable future.
I notice when it comes to re charging, most people seem to charge to 80% because the charge rate slows down for the last 20%.However sometime back I think I read that was the recommended thing to do for safety reasons, howeverwith BYD batteries, one can recharge them fully recharge them. Is this still the case.
You can certainly charge LFP batteries to 100% more often than you can do with non-LFP batteries. However, I don't think it's recommended to do so all the time, even with LFP batteries.
Chinese NEV makers really pay attention to safety nowadays. Ora Funky Cat got EURO-NCAP 5-star safety rating a few weeks ago. Here is another Ora Cat undergoing their internal rollover test:
Personally, the alleged BYD Sea Lion, future Tesla Model Y competitor, with its relatively short front overhang, looks good to me: