Owner`s manual

VOLTS TRIM CALIBRATION:
Try to make sure your battery pack is fully charged before adjusting (or else you will
have to continually monitor it and make more adjustments).
1. Turn the amps knob all the way down (full counterclockwise).
2. Make sure the charger is plugged into the battery pack and that there are no open breakers or
open fuses in the DC battery circuit.
3. With the charger’s AC breaker switch in the OFF position, plug the charger into the AC power
outlet.
4. Now turn ON the charger’s AC breaker switch. The fans should come on.
5. Using an appropriate insulated screw driver, stick it into the VOLTS TRIM access hole and turn
the internal adjustment potentiometer until you find the threshold where the yellow LIMITS LED
changes state. If the yellow LED is off, turn the trim pot counterclockwise to get it to go on. If the
yellow LED is on, turn the trim pot clockwise to get it to go off. Once you find the threshold where
the LED changes states, the cutoff voltage is set to the actual battery voltage and the charger will
not charge the pack above this voltage. Therefore, when you are ready to charge you will need to
turn the trim pot clockwise to raise this voltage ceiling. Then turn the AMPS knob up until you can
put the amount of amps you want into the battery pack while not letting the batteries go over their
peak voltage limit according to their manufacturer’s data.
While charging, when the battery pack voltage hits the peak limit the yellow LIMITS
LED will come on along with the flashing blue TIMER LED.
figure 03: VOLTS TRIM Adjustment
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