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B. CHARGING LITHIUMION/POLYMER BATTERIES Never leave batteries
unattended when charging. Monitor the temperature of the battery
occasionally during the charge cycle. If batteries become hot or
voltage exceeds 4.20 volts per cell, disconnect immediately.
Lithium batteries contain explosive material. Because of the volatile
nature of Lithium batteries, great care must be taken when charging
these cells. If improperly or overcharged, there is the risk that the
battery will explode or catch fire. Please follow instructions and/or
recommendations from the battery manufacturer when selecting
proper charge rate.
1. We recommend that you use a charge rate of no higher than 1C. For
example, for a 1600mAh battery, the charge current should be no
greater than 1.6 Amps. Read your battery’s instruction to find the right
charge current.
2. You must enter the cell number of your Lithium battery pack. Enter
one cell for 3.7 V battery. Enter two cells for 7.4 V battery. Enter three
cells for 11.1 V battery.
3. You must plug in the battery before enter the cell number and press
Start.
4. After starting the charge process, press Display Select button to make
sure that the word “LiPo” appears on the “cell” screen.
When charging a Lithium battery, never leave the battery unattended.
Never allow the battery voltage to exceed 4.20 volts per cell.
C. CHARGING 12V LEAD ACID OR GEL CELL BATTERY Never leave charger
unattended when in use.
We recommend using a charge rate of no higher than 0.2 times the
capacity of the battery. (example for 7AH battery the charge rate = 0.2 x 7
or 1.4 Amps).
D. DISCHARGING BATTERIES
The 977 has a built in discharge feature in it. You can discharge your
batteries on Channel A only. When discharging Lithium batteries, do not
enter the cell number. Once a battery is connected to the charger and the
voltage is displayed, you can select the discharge function by hitting the
“Discharge” button. You can only switch between charge and discharge when
the unit displays the voltage in channel A. You can then select the discharge
rate you wish to use in the same way you would select the charge rate. The
maximum discharge rate available is 4.00 Amps. You can then hit the “Start”
button to start the discharge process. You can also discharge on Channel A
while you are charging on Channel B.
E. TESTING BATTERY CAPACITY
You can test your battery pack’s capacity compared to the rated capacity of
the pack. Simply discharge the battery first, and then charge battery using
the recommended settings from above. Then, discharge your batteries
using a discharge rate of: rated capacity ÷ 5. This will give you a good
indication of the condition of your battery.
