Basic balance/metering wiring problem
I’m new to battery building so I’m starting out small. I just built my second small pack. I’ve encountered a problem with both packs. Something is going wrong with my balance/metering wires. Most recently I built a 4s1p pack using the vruzend kit. Each cell measures 4 volts. The pack measures 16 volts. I’ve attached monitoring wires following the directions in Micah’s ‘How To Install A BMS’ video. In this pack I soldered the metering leads to the bus bars. I checked continuity from the bus bar to the corresponding lead on the connector and they were all good. But when I attached the meter to the wires, it reported that the second battery was producing 0 volts and the pack only 12 volts. I tried a different meter and got the same results. I had a similar problem with my first pack which resulted in losing a couple of cells when they drained too low despite having a bms attached. Am I missing something basic? What would be a good next step to diagnose my problem?
Thanks in advance.