One Pack on 9L/9920 System?

[Serum]

I had them laying for about 1/2 year.. Every now and then (every month or so) i charged them with 1/10th C for a few hours, just to give them some energy.

When i was charging them entirely on 1/10th C.. 2 cells of 1 pack stayed cold.

Measuring them at a 1C discharge, gave a .3V.... Talk about imbalance. They are soldered by an unexperienced person as well, they have got some 1 mm gaps between them on the side of the bar..

I am having an email conversation with BK at this moment, they claim to give 0 guarantee on soldered cells...

Those are topnotch BK cells, about 10 bucks each.. there goes my faith in their balancing techniques..