Hadn't actually plotted this before now, but I think Johannes is referring to the read cell voltages by the BMS, one half is more jittery than the other in a pack that we manually measured to be perfectly balanced at the time:
- Presumably the jittery half is the front/are the further away cells.
- It's not always the same cells that read high/low
- both halves average out at almost exactly the same voltage
This is good knowledge and reassuring! I was worried I was the only person in the world with that setup/problem now.johu wrote: ↑Tue Nov 29, 2022 6:06 pm A man from Germany who converted his Volvo had to split his pack in 3. 1/2 in the boot like yours with the stock tap harness, 1/4 fuel tank volume, 1/4 engine compartment. Obviously for the latter two he needed to extend tap wires also. The problem does not exist for him.
I can quite easily test that by putting the 24kWh BMS in for a short test drive and see if that drops out when system under load.
Edit: Anyway, the cell balancing is a bit of a tangent. I will work through your comments and run experiments for the interference problem.