Saw your questions in the General Chat. I would suggest you go to You Tube and review the videos by Ice Hole Power. Jeremy is an electrical technician from the Air Force and now a technician for the railroad. He has done a lot of testing on various LiFePO4 and Lithium Ion batteries. You can judge for yourself what you are looking for and if you want to spend the money on the knock-offs.
My opinion, no, I will not be buying these knock-offs.