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III. OPERATION
A. CHARGING NICKEL CADMIUM (NICD) AND NICKEL METAL HYDRIDE
(NIMH) BATTERIES ONLY Never leave charger unattended when in use.
The unit has two channels and can handle two batteries at the same
time. However the LCD only displays one channel at a time.
1. Always connect the power source (120V AC adapter or 12V DC) to the
charger first. If you use the AC adapter as power supply, the total
charge current cannot be greater than 5A. The AC adapter has thermal
and overload protection. When the adapter is overheated or
overloaded, it will cutoff its output and cause the charge process to
prematurely end.
2. Attach the battery to one of the outputs on the charger. The battery’s
voltage will appear on the screen.
If the battery voltage reading is zero, check the polarity of the
battery connection. The 969 will not charge or discharge a battery
having zero reading in voltage.
At this point, if you are operating on channel A, you can select charge
or discharge by pressing charge or discharge button.
You can select charge or discharge only when the voltage is
displayed during setting.
3. If you want to use both channels, you should finish both channel’s
settings before starting one channel. This will make the setting process
faster. Once one channel is running, the charger will only take one
setting command per second for the other channel. This is slow if you
are changing many settings.
4. Select the appropriate channel/output you wish to operate by pressing
the “A/B select” button.
5. The charge current can be changed by pressing the “Display Select”
button to select the Amp display, and then pressing the “+” or “-” button
to select the Amps setting.
WARNING: Consult battery manufacturer’s instructions or included
section “Notes on Charging Batteries” before selecting charge rate.
6. The 969 can determine the number of cells in the pack you are
charging. This is based on the voltage and time curve of the battery
when connected to the output leads. The initial cell number displayed
may be incorrect. However the final cell number reading will be correct.
To speed up the test procedure, you can simply input the number of
cells instead of letting the 969 measure it.
7. The 969 will select a conservative peak setting, and it is dependent on
the number of cells in the pack (5mV per cell). While this setting may
be appropriate for NiMH batteries, it may be too low for NiCd batteries.
Press the “Display Select” button until “mV” setting appears on the
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