need JST-XH 6s Y adapter

[Tempted]

You would need a 12s balance tap to do this. I'm not even sure where you could get one. Depending on the charger, you likely wouldn't even be able to use your's to charge 12 cells at a time. I know my BC6 only charges 6s, as with most sub-$200 chargers. I would personally just balance the batteries seperately and avoid all the wire. Are you looking for a Y-Harness for the power leads, or just the balance taps?