After removing my BMS my board ran alot better. Fuck BMS. I don’t run them in any of my boards anymore. Just balance manually and check cell voltages myself every month. Very simple easy and safe if u don’t slack off.
No they were not. But I don’t like them for charging either. They don’t balance very well. And just another thing to break. I like to know what my cells looking like by checking them manually. Don’t trust the BMS so much. So I removed them totally.
Your right, you don’t need a bms as long as you manually balance charge your battery and never discharge it below 30% and never brake downhill on a full battery and never get a short and your battery’s spot welds never fail.
As for your bms degrading performance, I’m curious about what brand of bms you where using?
If you have some space in the enclosure and money left I would recommend a BMS for discharge, too (e.g Bestech). If you want a cheap one for charging only you could bypass this one in combination with a 50.V Li-ion charger: