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Since the way of internal resistance measurement varies, it cannot be realized to
measure the absolute value as professional internal resistance tester does. There-
fore, the internal resistance value can only be referred to when conducting horizon-
tal comparisons, such as judging the consistency of the cells’ performance or
making comparisons of the performance of different cells. The charging current is
an influential factor for measuring internal resistance; batteries with large capacity
and small internal resistance would relatively need large charging currents to accu-
rately measure the internal resistance.
During the charging process, the screen displays an orange marking which turns
into green or blue as the charging is completed. When the charging completes, the
cells’ voltage difference should be smaller than 20mV, while the screen marking
turns into green. Therefore, if the battery is in urgent use, it’s okay to stop charging.
The charger should continue to balance the battery if the charging process is not
terminated, and the screen light turns blue, since the voltage difference is smaller
than 10mV. Additionally, the charger should continue to carry out accurate balancing
of the battery after the light turns blue. If the consistency of the cells is excellent, the
screen light should skip color green to become blue as the charging is complete.
After the charging is complete, it is normal for voltage decline to occur due to differ-
ent performances. As the number of the charge cycle grows, the performance
decreases, and the voltage decline phenomenon becomes obvious. To charge the
battery with a larger current would also cause a more obvious voltage decline after
the charging is complete.
NB: When charging the battery in a hurry in outdoors, it is okay to stop charging
when the screen light turns green. If there is enough time and the cells are assumed
to be well balanced, it is better to stop charging when the screen light turns blue;
alternatively, wait a little longer after that to gain more accurate balance effects.
Charging completed
Task Setting
