• 4 •
ABORTED CHARGE
If charging cannot be completed normally, charging will abort. When charging aborts, the charger’s output is shut off and the Bad Battery (red) LED will light. Do not continue
attempting to charge this battery. Check the battery and replace, if necessary.
DESULFATION MODE
If a sulfated battery is detected, the Bad Battery (red) LED will light immediately. Desulfation could take 8 to 10 hours. If desulfation fails, charging will abort. If desulfation
is successful, the unit will automatically begin charging, and the Charging (yellow/orange) LED will light.
COMPLETION OF CHARGE
Charge completion is indicated by the Charged/Maintaining (green) LED. When solid, the charger has switched to Maintain Mode.
MAINTAIN MODE (FLOAT MODE MONITORING)
When the Charged/Maintaining (green) LED is solid, the charger has started maintain mode. In this mode, 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
The RP1202 and RP1210 maintain 12-volt batteries, keeping them at full charge. It can charge and maintain both small and large batteries.
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 recommended.
13. MAINTENANCE AND CARE
A minimal amount of care can keep your battery charger working properly for years.
• Clean the clamps each time you are finished charging. Wipe off any battery fluid that may have come in contact with the clamps, to prevent corrosion.
• Occasionally cleaning the case of the charger with a soft cloth will keep the finish shiny and help prevent corrosion.
• Coil the input and output cords neatly when storing the charger. This will help prevent accidental damage to the cords and charger.
• Store the charger unplugged from the AC power outlet in an upright position.
• Store inside, in a cool, dry place. Do not store the clamps clipped together, on or around metal, or clipped to the cables.
14. TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
The Power LED does not light when
charger is properly connected.
AC outlet is dead.
Poor electrical connection.
Check for open fuse or circuit breaker supplying AC outlet.
Check power cord and extension cord for a loose fitting plug.
The battery is correctly connected, but the
Charging LED did not light immediately.
If the START/STOP button is not pressed, charging should
begin in ten minutes.
No problem; this is normal.
The battery is properly connected, but
the Charging LED never lit.
The battery voltage is low.
Press the START/STOP button to start charging.
The red Bad Battery LED is lit.
The battery voltage is still below 10V after 2 hours of charging.
(or)
In maintain mode, the output current is more than 1.5A for
12 hours.
The battery is sulfated.
Lack of progress is detected and battery voltage is below
14.2V.
The battery’s initial voltage is below 12.2V and the total input
is less than 1.5 Ah.
The battery voltage drops to below 12.2V in Maintain Mode.
The battery may be defective. Make sure there are no loads
on the battery. If there are, remove them. If there are none,
have the battery checked or replaced.
The charger is in desulfation mode.Continue charging for
several hours. If not successful, have the battery checked.
The battery may be overheated. If so, allow the battery to
cool. The battery may be too large or have a short circuit.
Have battery checked or replaced.
The battery capacity is too low, or the battery is too old.
Have it checked or replaced.
The battery won’t hold a charge. May be 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.