Originally Posted by
theo551
I have the icharger 206b it has a mode in the special modes "measure internal resistance ". This can only be run on its own not while charging. After reading my manual I have noticed I can hold start\enter for 3 sec and check there also.
I've never seen anyone track IR that way. For all the reasons Dave lists below.
Originally Posted by
Dave H
For measuring IR try to be as consistent as possible, if you want to compare and track pack condition. Same charge state, why many check it at end of charge. Very important to be at the same pack temperature. First charge of the day will likely be slightly different than later charges. Charge rate, etc.