C-Code Matrix
When a C-Code matrix has been stored to perform a QuickTest, an inverse T in the top-
right-hand corner of the LCD screen will display along with the basic C-Code.
Locked C-Code
Cadex locks some C-Codes at the request of the battery manufacturer. An inverse L on the
top-right hand corner of the basic C-Code display indicates a locked C-Code. These C-
Codes cannot be edited but they can be deleted.
Extended C-Code Parameters
In general, extended C-Code parameters can be left on their default settings. For servicing
intrinsically safe (I/S) batteries or Hawker SLA batteries, pay close attention to the
extended C-Code parameter settings (see Extended C-Code Settings for Special cases,
page 51).
Charge Rate
A battery with 1000mAh capacity that is charged at 500mA has a charge rate of 0.50C
(where C stands for capacity). A lower charge rate reduces the charge current and
increases service time. Maximum current is 4000mA (6000mA for the C700ER) for
batteries with a stated cell voltage of up to 7.2 V. Maximum current is reduced for
batteries with higher nominal voltage. For example, on the C7200, the charge rate for a
14.4V battery will be automatically scaled to 2000mA. An inverse S (Scaled) will be
displayed on the basic C-Code screen.
Discharge Rate
A battery with 1000mAh capacity that is discharged at 500mA is discharged at 0.50C
(where C stands for Capacity). A lower discharge rate reduces the discharge current and
increases service time. Maximum current is 4000mA (6000mA for the C7400ER-C using
special adapters). The discharge rate is reduced for batteries with higher nominal voltage
(for example, 2400mA for a 14.4V battery on the C7200). For a single-cell NiCd or NiMH
battery, the maximum discharge is 2500mA.
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