Comutech 100701 Mode D'emploi page 20

Note: Do not leave Battery Charger on for long duration without checking the distilled water
level of the battery; do not allow distilled water to boil off.
10. Disconnect charger and unplug the Power Cord (3} from the electrical outlet.
11. Disconnect the Cable Clamps from the battery.
AMMETER READINGS
The ammeter shows how much charging current is drawn from the charger (to the battery}.
When a dead or low battery is charged the charger's ammeter will register at the high end. As
the battery charges, the reading will move down toward the low end, resting on zero, when the
battery is fully charged. Do not depend on reading the ammeter to approximate how long
charging will take. Even at full charge the ammeter will still be providing as much as 50 percent
of the charger's output rating. lt's best to monitor the battery's charge. Sometimes, certain
conditions such as a cold battery, a sulfated battery, or a deeply discharged Lead Calcium
battery (on many newer cars} may cause the ammeter to read near a full charge, when the
charging process is only beginning.
Note: Cold batteries (at or below 0°C} begin charging at a low rate and then increase as the
battery warms. When the battery charges up, the rate will decrease at a normal rate. Do not
charge a frozen battery.
SHORTED BATTERIES will read on the ammeter as a high end peg at the beginning of the
charging process. If after 5-10 minutes the needle does not move off of the high end, the battery
probably has a short circuit. Unplug the charger and discontinue use. Have the battery checked
by a qualified technician.
JUMPSTARTER (Quick Charge 5 – 10min)
Note: This charger's high-current output can help start vehicles with weak batteries. Some
newer vehicles with onboard computers may be damaged from this process. Thoroughly read
the vehicle owner's manual before using this procedure.
1. Connect the charger to the battery as discussed on pages 7 and 8, but leave the battery cables
attached.
2. Set the charger to charge the battery for 5-10 minutes according to the appropriate charge rate
for the size of the battery as explained on the previous 2 pages.
3. Set the select function switch to Start and the select switch to 55A.
4. Try to start the vehicle. If it doesn't start in 12 seconds, stop and allow the charger to rest for
4 minutes. After resting, it may be beneficial to charge the battery as explained in step 2 before
attempting Repeat this process until successful.
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