Mark and track the sets?
I never used tc before wouldn't know where to start
Internal resistance?
Is there a way to keep the last draws voltage and amps instead of it always zeroing out
The battery profile in DNA can be ignored and you can use the default one. You don't have to mess with it if that is what you are referring to. The battery profile only sets the the voltage vs percent of charge for specific batteries and makes that more accurate to what the display shows. It is a curve of how the voltage of the battery relates to percentage of charge.
Here is one for Samsung 30Q battery
"Battery Charge (%)","Cell Voltage (V)"
0,3.23000001907349
3.33501768112183,3.30999994277954
13.2951545715332,3.49000000953674
20.3301334381104,3.54999995231628
40.5816650390625,3.75
62.6242218017578,3.90000009536743
79.0971908569336,4.05999994277954
91.7522888183594,4.09999990463257
96.7604293823242,4.13000011444092
99.7080459594727,4.17999982833862
100,4.19999980926514
As for marking the batteries yourself. I was referring to you should marry batteries for multiple battery devices. You should have sets for the device kept together and not just mix and match batteries. So if you have a 2 battery device and 2 sets, you should mark the batteries as set 1 and set 2 and not mix batteries between sets.