Hi, I would like to ask you. I have A123 LiFePO4 pouch cells 20Ah on my ebike. I bought them from Cina, from Lithium Batteries,Motorcycle Batteries,Solar Batteries,KOK Power Limited. They got me very good price, two years before. When I got them, I was amazed. All of them had exactly 3,300 V. I have two packs of 8 of them in one, because I charge them with my M8S ToolkitRC charger, then I connect them with switch to 16 in series. They have may be only 100-150 full cycles but, I dont know why, the first and last cell of both packs is charged and discharged as first one. I have to charge still in balance mode, because then is voltage on every cell different more than 0,2-0,3 V, what is unacceptable. I do not have any BMS on it, because I had idea, that I will not need it, when I will charge them in balance mode. I used before Lipol 5S Turnigy cells I charged them without balance mode, only sometimes, may be one time per two months check them and difference was not more then 0,03 V between cells. So are these LiFePO4 pouch cell so poor quality, or is there any other problem, why first and last cell from whole pack is still as first charged and first discharged? Thank you very much.