I have built a few pack but for some reason this one isnt charging. Any ideas in case i am missing something obvious...or how do i test bms? Charger is fine cells are brand new and all good.
my first check is measuring all cell voltages if they are in range 3-4.2V. Measuring single cell voltages at the input of BMS. BMS in the second picture looks as if some soldering lead where it should not be.