I have been studying two of my dead batteries the last couple days. Both show 50% on the LEDs, but actually are at 10.8V and unsafe to fly. One had about 75 cycles, the other 55 or so. I'm sick of these inferior pieces of sh** and want to refurb them. I spent hours today looking for the correct size of battery and have come to the conclusion that you cannot find a 100x34x8mm cell that has a capacity of 2600mAh (3 cells = 11.1V pack, 2 packs = 5200mAh). All 2600mAh cells made by the best manufacturers are 13cm long (longer than the DJI pack). The closest is a Turnigy cell that has 2200mAh = 4400mAh pack. Thus I cannot see a way DJI could ram almost 20% more into the same size constraint. Those noname packs claiming 5400 and 6000 are even more questionable. I have extreme doubt that DJI or anyone else would have specially made cells that have a 20% higher capacity and the big manufacturers wouldn't make or offer them. ~20% capacity without changing size is a huge number in the world of batteries. Can anyone logically explain how any of these claims can possibly be true or show an example of a cell with the claimed capacity and same size?