I'm currently building my own electric longboard and even though I looked through some resources considering this, I am not a 100% sure that I am on the right path.
I want to use a 10S2P battery pack, consisting of Samsung's 30Q 18650 and I bought a 10S BMS with balancing capabilities.
Now I need to charge the battery pack. Since it is 10S the charging in the first stage would be 42V for CV and below 6A for CC. I saw videos online where they simply use a Buck-Boost-Converter, which is capable of CC-CV. To my understanding, that would only cover the first stage of the charging process.
What happens afterwards, if the CC-CV converter is still connected, even though first stage is over? I somewhere read, that CC-CV is from an electronics point of view simply CC, so the voltage might vary. Are there fatal consequences to be expected, if the converter is connected for too long? What happens in that case?
If the first stage is over, there might be a chance that the CC-CV converter (which is really only a CC as I read, in case that's even correct) puts out more than 42V which is definitely a hazard for the Li-Ion cells. But since I am using a BMS (with overvoltage and balancing capabilities) I should be safe from this, right?
Are BM systems in general capable of doing overcharge protection? voltage- and current-wise? So simply put: Can I connect the BMS to CV 42V and it will take care of everything?
I could not really find specific answers to these questions, but hopefully you can enlighten me.
Thanks in advance.