I recovered 5 out of 6 packs of my 6s 5000mah Turnigy lipo doing this method, I am very pleased
I am interested in seeing the pics Ypedal posted but there not viewable on the forum any more because there were posted way back in 2010?
All my packs that had dead cells were either the first or very last cell in the pack, (the ones that can most easily puff) also all cells had been discharged to at least below 2.0v the cells averaged 1.2volts I would say.
I used my BC168 charger to recharge the batteries after depuffing them in the vice.
The BC168 appears to not charge a cell if it reads 0volts so I gave any cell that read complete 0 a little voltage kick from another battery and the BC168 instantly kicks in and starts charging the cell.
There was at least one pack where after being in the vice and charging the other cells on the BC168 a bad/dead cell reading 0 just came back to life and didnt need any external voltage boost to kick the BC168 into charging it. It seemed to actually come alive after I removed it from the vice with the BC168 plugged into it and I noticed a voltage reading come alive from zero.
I then started to then gently massage the end cells of this pack with my fingers moving electrolyte juices around inside, I reckon it helped bring the cell healthy and alive again.
I also placed my packs with foam in between the vice the idea is that any pits in the pack get more pressure then just straight hard walls.
I used a Stanley knife to depuff my cells, I tried using a toothpick from Nandos but it didn't work, I then on my last cell tried a blackberry thorn and this did work, so theres another option.
I feel more uncomfortable about using these packs now as I have tortured them so I have placed them in this metal box, there also wrapped in fire-blanket on the inside.
I also placed a fuse switch here that is in between both 6S packs in series, this way I just flick a switch and can plug in both my JST balance cables into the BC168 at the same time to charge the whole pack without creating a short/fireworks. Of course all I have to do is merely flick the switch while the two balance leads are connected and I will be sorry.
I do prefer this method though as constantly unplugging-replugging the two sides of the battery manually just feels crappy.
This box contains 4 Turnigy S6 packs.... so its 12S 2P setup.