best way to dispose a 6s

[ezhitz]

Hi
I have a 6S pack with one cell that crapped out and was wondering how to bring the other cells down to zero? I have had two other 4s packs
that did the same but was able to discharge with a 12v sealed beam car light but this pack is still over 20 volts. The charger will not do it because the one cell is so low and seems to go to zero under load and if I try to charge it will read as high as 7 volts. Time to try new packs.