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No I didn't, I put it once the pack was fully charger but didn't add the PSU once BMS was connected. I will try Thanks, I didn't know that. Out of curiosity, why is that?

I reached out, and they sent another one. Waiting to receive it.

Hi everyone, My setup: BMS: DALY BMS 4S 12V 120A Cells: 277ah ETC My issue: When multimeter connected at P- on BMS and main positive it reads a very low voltage: around 8.36v (see pictures) Although when multimeter connected directly on the main positive and main negative it reads 13.36v...