Just got a brushless edition Revo!

[suicideneil]

If a pack puffs, its done for usually- it'll puff each time you use it in the same application given the same stress/load.

As for the nice offer of a discount- if they werent junk lipos to start with, they would never have puffed; they should replace like for like, not offer a discount on new ones.

Auto lipo isnt to blame- you should be able to discharge them down to ~2.5-2.7v without damaging them- auto lipo is 3.0v per cell; trouble with maxcrap lipos is that they just dont like outputting so much current so will over heat and puff, long before lvc is hit (otherwise it would have kicked in to stop tyhem from overdischarging to too low of a voltage).