Discharge/Discharge Refresh Modes; Charge Test/Quick Test Modes - Opus BT-C2000 Operating Instructions Manual

DISCHARGE Mode
In the DISCHARGE mode the rechargeable battery is discharged to a preset battery voltage (0.9V)
then discharged is terminated. At discharge termination 0 mA current is displayed in that channel
display. Press the DISPLAY button to view discharged capacity.
Example: Insert battery into a slot. Press MODE button until DISCHARGE is displayed.
Press CURRENT button to select 100, 200, 300, 400, or 500, (600 or 700) mA discharge rate.
If CURRENT button is not pressed the discharge current will automatically default to 200 mA.
DISCHARGE - REFRESH Mode
In the DISCHARGE-REFRESH mode the rechargeable battery is discharged then charged repeatedly
to optimize to its maximum capacity. Old rechargeable batteries or rechargeable batteries that
have not been used for a long period of time can be restored with this mode. Depending on the
selected discharge and charge current, it can take tens of hours for completion. Refresh mode will
make 3 complete discharge-charge working cycles. When the discharge-charge cycles are
complete FULL will be displayed in the channel display.
Example: Insert battery into a slot. Press the MODE button until DISCHARGE-REFRESH is
displayed. Press the current button for 100, 200, 300, 400, 500, (600 or 700) mA discharge rate.
If the CURRENT button is not pressed the discharge current will automatically default to 200 mA.
CHARGE - TEST Mode
The CHARGE-TEST mode tests the present capacity of a rechargeable battery. The maximum
capacity is determined by first fully charging the battery, then discharging the battery while
measuring discharge current and time. The battery is then charged to full. After completion of the
CHARGE-TEST mode, tested battery capacity is displayed in mAh or AH alternating with the FULL
indication.
Example: Insert battery into a slot. Press the MODE button until CHARGE-TEST is displayed in
that channel. Press the CURRENT button to select 200, 400, 600, 800, 1000, (1200 or 1400)
charge rate. If CURRENT button is not pressed the current will automatically default to 400 mA.
QUICK TEST Mode
The charger will analyze the dynamic internal battery resistance by applying a load current and this
current reading is referred to the voltage drop detected on the battery. Within 10 seconds the
tested battery resistance will be displayed in the unit of milliohms (thousandths of an ohm). Only
fully charged batteries should be tested for internal resistance. Please note that the internal
battery resistance can be very small, and contact resistance can be a major factor; thus with the
same battery tested in a different slot or even in the same slot with different contact conditions,
measurements can vary by up to 20%.
Example: Insert battery into a slot. Press the MODE button until QUICK TEST is displayed in that
channel. This symbol will appear in that channel -- --. Wait for a number or numbers to appear in
place of the symbol -- --; this may take 30 seconds or longer. This will be the battery internal
resistance in milliohms. A reading of 55 represents 55 milliohms or 0.055 ohms.
NOTE: Due to greater contact resistance, measuring internal resistance of high capacity C and D
cells with the included C&D to AA adapters is unreliable. Typically internal resistance of high
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