Cadex C4000 SERIES, User Manual

Page: 105 / 152

C-Code Tables
How to set Battery
Rating and C-Rate
How accurate are the
battery ratings
specified by the
manufacturer?
Limitation
Separate C-Rate setting
for charge and
discharge
Which C-Rate
Resolution should I
use?
• Always set the Battery Rating as specified by the batt.
manufacturer.
• Set the recommended charge and discharge C-Rates
afterwards.
Battery manufacturers often over-rate their batteries by
specifying the peak rating rather than the more realistic
average rating. If the capacity readings on new batteries
are consistently
low, find out what the average battery
rating is. Most warranty claims are based on the
average rating. Average ratings are 10% to 15% lower
than peak ratings.
If the specified C-Rate results in a current above 2A, or
the C-Rate is above 3.9C, the LCD indicates "TOO
HIGH". The C-Code is invalid.
Caution Pay special attention when using a C-Rate
higher than 1C. Only specialty batteries can be charged
at a higher C-Rate. Aging batteries or those with
mismatched cells may overheat.
The current that the battery is charged or discharged at
can be set with the C-Rate. The charge and discharge
C-Rates can be set independently.
The first two digits
control the charge C-Rate, the second two digits control
the discharge C-Rate.
• Use Standard C-Rate Resolution for most applicatiom
• Use Fine C-Rate Resolution for higher capacity
batteries or application where fractional C-Rate
values are required.
• Standard and Fine C-Rate Resolutions are set by
selecting the appropriate Battery Type Code.
Refer to "1. Battery Type" in this chapter.
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