JLG 20VP (3120727) Operator Manual - Manual (Page 20)

SECTION 2 - PREPARATION AND INSPECTION
2-6 – JLG Lift – 3120727
3. Connect the battery charger AC power cable to a
properly grounded receptacle, use a suitable exten-
sion cord, if necessary.
4. When powered on, the charger runs through a self-
diagnostic check which lights all five (5) lights on the
face of the charger three (3) times, then each light in
sequence, then all five (5) lights three (3) times
again on the front panel of the battery charger.
5. When ready to charge, the CHARGER ON light and
the INCOMPLETE light on the front panel of the
charger will light up, the charger will then begin to
charge the batteries.
NOTE: If the ABNORMAL CYCLE light comes on and stays
on at any time during the charge cycle, see sub-sec-
tion following about the ABNORMAL CYCLE indica-
tor light.
6. When the battery cell voltage reaches 2.37 V/cell the
80% CHARGE light on the front panel of the charger
will light up. The charger then continues to monitor
the increase in charge until it sees no increase, and
then terminates the charging process.
7. The CHARGE COMPLETE light will come on when
the charging process is finished.
8. Unplug the charger AC power cord and wrap
around storage lugs under the left battery cover.
Abnormal Cycle Indicator Light
If the ABNORMAL CYCLE indicator light should come on
during the normal charging cycle of the batteries, it could
indicate any of the following conditions;
• The AC input to the charger was interupted, i.e. local
power failure or charger cable was unplugged or
bumped and power was interupted intermittently.
• A dead cell or cells in either battery would prevent the
charger from sensing enough voltage to complete the
battery charge.
• One or more of the batteries terminal connections loose
resulting in an intermittent incomplete circuit.
Figure 2-4. Battery Charger Front Panel.