TASK SETTINGS
The UP9 features the ability to monitor the internal resistance of
each cell in a lithium battery pack. This feature is only operational
when in the balance charging mode. Internal resistance can be use
ful 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 that the battery will deliver its energy.
NOTE: The process of charging a lithium battery is dynamic,
therefore you will notice fluctuations in both charge current and IR
during the charging process.
Due to the difference measurement methods of the battery
resistance, it is impossible to achieve the absolute data similar to
the professional resistance measurement instruments. Therefore,
the internal resistance value is only suitable for reference with
horizontal comparison, such as judging the consistency of the
performance with the battery or the performance comparison
between different batteries. The charging current has some
influence on the accuracy of the internal resistance measurement.
A large-capacity and low internal resistance battery requires a large
charging current to accurately measure the internal resistance.
Storage
When selecting the storage function, the UP9 will automatically
begin charging if the battery pack voltage is below the ideal storage
voltage. Likewise, the UP9 will automatically enter the discharge
mode if the battery pack voltage is higher than the ideal storage
voltage.
Measuring Internal Resistance
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