• 11 •
Battery Size
The charger automatically selects a charge rate up to 30 amps. The charger charges at the selected charge
rate and eventually reduces the charge rate in a controlled manner. After the charging process has started,
the digital display can be used to determine the charging progress by selecting the % display mode.
Important facts to keep in mind when charging a battery:
• When the display indicates 77% charged, the battery has been charged enough to start most vehicles.
• After connecting to a battery, the battery % shown in tester mode is an estimate based on the battery
voltage and a scale set by the Battery Council International. The battery % shown in charger mode is
an estimate of the relative charge in the battery compared to the charge it should have if the charging
process is allowed to complete.
• The battery % shown in tester mode can be used to estimate the relative charge time. The lower the %
shown, the longer the charge time for a given battery.
• The battery % shown in charger mode is an indication of the relative progress of the charging process.
The higher the battery % displayed, the less charge time remains.
• The more a battery is discharged, the faster it absorbs a charge from the charger. That means that the
battery % increases faster at the beginning of the charging process than at the end. In other words, it takes
longer for a battery to accept the last few percent of the charge than the first several percent.
• If a battery is not disconnected from the charger, the battery % will be retained through START/STOP
button presses.
14. 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 on the handle, clipped together, on or around
metal, or clipped to the cables.
15. TROUBLESHOOTING AND ERROR CODES
Error Codes
CODE
DESCRIPTION
REASON/SOLUTION
F01
The battery voltage is still under 10V (for a
12V battery) or 5V (for a 6V battery) after
2 hours of charging.
The battery could be bad. Have it checked or replaced.
F02
The charger cannot desulfate the battery. The battery could not be desulfated; have it checked or
replaced.
F03
The battery was unable to reach the “full
charge” voltage.
Have the battery checked or replaced.
F04
The connections to the battery are
reversed or are made incorrectly.
The battery is connected backwards. Or for multiple batteries being
charged, the connections are not proper. Unplug the charger and
reverse or correct the connections to the battery(s).
F05
The charger was unable to keep the
battery fully charged in maintain mode.
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.
