I have 2 revtech 6900mah 100c 2s lipos and 1 case is deformed but the actual cells seem to be flat feeling that u can squeeze the case down easily, I bought these 2 lipos for 100$ with about 3-4 cycles on em which is a good price and the guy said he talked to trinity and that this was normal so I researched and it seems to be normal, I also trusted the guy cause he has 100% feedback with 40-50 sales, just hope trinity isn't lying and I run these in my fresh tekno then they go up in smoke, cause I will save my truck and rip out the batteries hahaha