Napa 90-650 Owner's Manual page 6

NOTE: After 3 minutes in Engine Start mode, the charger will enter into a cool-down period of 180
seconds, to allow the charger and the battery to cool down.
6. If the engine fails to start, use the 40A Boost
engine again.
7. After the engine starts, move the switch to the OFF position and unplug the AC power cord before
disconnecting the battery clips from the vehicle.
8. Clean and store the charger in a dry location.
NOTE: If the engine does turn over but never starts, there is not a problem with the starting system; there
is a problem somewhere else with the vehicle. STOP cranking the engine until the other problem has been
diagnosed and corrected.
ABORTED CHARGE
If charging cannot be completed normally, charging will abort. When charging aborts, the charger's output
is shut off, and the display will show CHARGE ABORTED - BAD BATTERY. Do not continue attempting to
charge this battery. Have it checked or replaced.
DESULFATION MODE
The display will show BAD BATTERY when a sulfated battery is detected, and the charger will go into
desulfation mode. If the desulfation is not successful after 10 hours, the charger will go into abort mode
and the display will show CHARGE ABORTED - BAD BATTERY.
COMPLETION OF CHARGE
Charge completion is indicated by the Charged/Maintaining
switched to the maintain mode of operation.
MAINTAIN MODE (FLOAT MODE MONITORING)
When the Charged/Maintaining
the charger keeps the battery fully charged by delivering a small current when necessary. If the charger
has to provide its maximum maintain current for a continuous 12 hour period, it will go into abort mode
(see Aborted Charge section). This is usually caused by a drain on the battery or the battery could be bad.
Make sure there are no loads on the battery. If there are, remove them. If there are none, have the battery
checked or replaced.
MAINTAINING A BATTERY
This unit charges and maintains 6 and 12 volt batteries, keeping them at full charge.
NOTE: The maintain mode technology allows you to safely charge and maintain a healthy battery for extended
periods of time. However, problems with the battery, electrical problems in the vehicle, improper connections
or other unanticipated conditions could cause excessive current draws. As such, occasionally monitoring your
battery and the charging process is required.
FAN OPERATION
It is normal for the fan to be on for a while after Engine Start operation to allow the charger to cool down.
Keep the area near the charger clear of obstructions to allow the fan to operate efficiently.
BATTERY CHARGING TIMES
BATTERY
APPLICATION SIZE
POWERSPORTS
6Ah
32Ah
AUTOMOTIVE 300 CCA
1000 CCA
MARINE 50Ah
105Ah
Times are based on a 50% discharged battery and may change, depending on age and condition of battery.
(green) LED is lit, the charger has started maintain mode. In this mode,
CHARGING TIME (Hours)
2A 6A 8A 10A
6 2 1.75 1.5
15 5 4.5 4
12 4 3.5 3
30 10 8.5 7
15 5 4.25 3.5
33 11 9.5 8
rate for 5 minutes before attempting to crank the
(green) LED. When lit, the charger has
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