Can the cell in DJI Mavic 2 pro batteries be replaced?

Question

Batteries

Hello!
There are 3 batteries from mavic 2 pro. Worked 1 year for 90 charge cycles each. I found official information that they can work out 200 cycles. But here it is clear that the cause of the swelling was in the incorrect operation. There were aggressive flights, in hot weather and the dumbest thing on my part - I charged them immediately after the flights.

Given: 3 batteries are more or less swollen. In general, I opened all 3 batteries and saw that not all the banks of the batteries were swollen. I also note that not all banks hold the necessary voltage (they drop below 3.5 under load) - I saw this information through the DJI program.

Idea: find out which cells are alive and not swollen. collect 1 or 2 batteries from them.

Question:how to figure out which cells are in the best condition? is it possible to "transplant" cells?

ps I wanted to pierce swollen batteries, but changed my mind. found more worse outcomes and almost none positive in favor of this method. So I decided to go with the permutation method.

Answer 1

how to figure out which cells are in the best condition?

This is elementary: in addition to the capacitance, one more parameter must be taken into account - internal resistance. It is it that rises with operation and leads to the fact that not all banks hold the necessary voltage (they drop below 3.5 under load).
You can measure it using the widely used IMAX B6 device, or you can assemble a simple load stand from a resistor and a multimeter.

is it possible to "transplant" cells?

Of course, but it is highly desirable to combine more or less matching elements into a battery, since the quality and life of a battery is determined by its worst element.

Answer 2

I found out that it is impossible to chop off the cells - most likely they can be changed only when the appropriate voltage is applied to the same terminals. If you just flip it, the controller will lock up. The same thing will happen when the drawdown is below 2 volts in the cell. Also a hemorrhoid with the fact that the cells are soldered by spot welding.
It all seems complicated to me - especially the transfer under voltage. If anyone has experience please share.