vreppeto
100 mW
- Joined
- Oct 3, 2018
- Messages
- 36
I have one of the 5.5a capacitive balance boards https://www.aliexpress.com/item/1A-...122.html?spm=a2g0s.9042311.0.0.27424c4do16ZHS. I m wondering if it is safe to run it in parallel with a cheap chinese bluetooth bms. https://www.aliexpress.com/item/-/33062359787.html?spm=a2g0s.8937460.0.0.9c642e0eiTtu0h
It scared me when I first tried to connect both units at once because there was a large spark. It makes sense that it should be safe to use together in my mind. I cannot picture any kind of short that might cause them to argue. Testing for resistance/continuity between terminals on the balance board shows resistance for a a split second before it opens completely. This seems to be the source of the spark. The bms has short circuit protection. It does not seem to hurt the bms. I disable balancing using software for the bms so the blanace board can work without interruption. What do you all think? Is there any reason the bms might be damaged?
It scared me when I first tried to connect both units at once because there was a large spark. It makes sense that it should be safe to use together in my mind. I cannot picture any kind of short that might cause them to argue. Testing for resistance/continuity between terminals on the balance board shows resistance for a a split second before it opens completely. This seems to be the source of the spark. The bms has short circuit protection. It does not seem to hurt the bms. I disable balancing using software for the bms so the blanace board can work without interruption. What do you all think? Is there any reason the bms might be damaged?
