Translations:KAVAN C20 Duo - Instruction manual/23/en
Measuring internal resistance
The charger features the ability to monitor the internal resistance (IR) of each cell in a lithium battery pack. This feature is only operational when in the balance charging mode. Internal resistance can be useful to determine the overall “health” and performance of a lithium battery; the closer the IR values are between the cells in the battery pack, the better the battery will deliver its energy.