Thank you very much for your detailed answer
Yeah, I saw that it also has the same protection included, I just felt kinda unsafe to only rely on the internal protection lol
, so I added the chip. What you said makes 100% sense though.
I do plan to add fuses to both the battery and a USB connector for charging. The charger is from TI BQ24040DSQR and comes with overvoltage protection, safety timer, short circuit protection, current limitiation, thermal regulation, NTC, so it's at least not some unknown brand, safety comes first in this matter.
I knew that my device will have to comply to RED. However, I assumed I'd only have to worry about stuff not related to the bluetooth module. Guess, I was a little too optimistic
haha, don't worry I'm not discouraged at all. I know it's hard and I build the whole project in public so everybody can watch me doing it (on Twitch). The goal is to do a crowdfunding at the end, but if it doesn't work out then I'll just move on with my next idea. The crowdfunding is just for market verification so that I don't end up with a couple certification stickers, 20k gone and no customers
Thank you very much for your answers and also the awesome links