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RW 420 User Guide
Note: A fault condition is caused by a problem with the battery.
The charger may indicate a fault because the battery is too
hot or cold to charge reliably. Try to charge the battery again
when it returns to the room’s ambient temperature. If the Amber
indicator starts flashing on the second attempt, the battery
should be discarded.
Quad Charger Cycle Times for RW 420
Battery Status Time
Battery 80% Charged 2.5 Hrs
Battery Fully Charged 5 Hrs.
NOTE: These times are for completely discharged batteries.
Partially discharged Battery Packs will take less time to
reach their charged state. Battery Packs which have reached
80% of their charge capacity may be used, however, it is rec-
ommended that you allow the batteries to reach a full charge
to maintain maximum battery life.
The UCLI72-4 Quad Charger’s safety features will stop
charging a battery after six hours regardless of its charge
state.
Fault
Fast C harge
Fault
Fast C harge
Fault
Fast C harge
Ready
Power
Full C harge
Ready
Full C harge
Ready
Full C harge
Full C harge
Fault
Fast C harge
Ready
Figure 4: UCLI72-4 Quad Charger
Amber
Indicator
Green
Indicator
2. Rock Battery Pack
into place
1. Slide Battery Pack into
Charger Bay
Power Indicator
Power Supply
Charger Bay