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8.  When charging is complete, or if you want to stop charging, press the START/STOP button, press the 

POWER ON/OFF button, disconnect the charger from the AC power, disconnect the clamp attached 

to vehicle’s chassis, and finally remove the clamp from battery terminal.

9.  A marine (boat) battery must be removed and charged on shore.
CHARGE RATE

The charger will automatically adjust the charging current, based on battery size, in order to charge the 

battery completely, efficiently and safely. 
BATTERY CHARGING TIMES

APPLICATION

BATTERY

SIZE

CHARGING TIME (Hours)

2A    6A    8A    10A

POWERSPORTS

6Ah

6

32Ah

15

AUTOMOTIVE

300 CCA

12

1000 CCA

30

MARINE

50Ah

15

105Ah

33

2

5

4

10

5

11

1.75

4.5

3.5

8.5

4.25

9.5

1.5

4

 

3

7

3.5

8

Times are based on a 50 percent discharged battery and may change, depending on age and condition of battery.

AUTOMATIC CHARGING MODE

When an Automatic Charge is performed, the charger switches to the maintain mode automatically after the 

battery is charged. 
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. The digital display will show an error code (see 

Troubleshooting for a description of the error codes). Do not continue attempting to charge this battery. 

Have it checked or replaced.
DESULFATION MODE

Desulfation could take 8 to 10 hours. If desulfation fails, charging will abort and the BAD BATTERY (red) 

LED will light.
COMPLETION OF CHARGE

Charge completion is indicated by the 12V CHARGING (green) LED. When lit, the charger has switched 

to the maintain mode of operation. 
MAINTAIN MODE (FLOAT MODE MONITORING)

When the 12V CHARGING (green) LED is lit, 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. 
MAINTAINING A BATTERY

The unit charges and maintains 12V 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 required.
USING THE ENGINE START FEATURE

Your battery charger can be used to jump start your car if the battery is low. Follow all safety instructions 

and precautions for charging your battery. Wear complete eye protection and protective clothing. The 

engine start feature can be used with the charger connected to an AC outlet or disconnected from the outlet 

and used as a portable unit. Follow the appropriate instructions for each below.

WARNING: Using the Engine Start feature WITHOUT a battery installed in the vehicle could cause 

damage to the vehicle’s electrical system. 

Summary of Contents for SC1591

Page 1: ...LEAD ACID BATTERY IS DANGEROUS BATTERIES GENERATE EXPLOSIVE GASES DURING NORMALBATTERY OPERATION FOR THIS REASON IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE CHARGER b To reduce risk of battery explosion follow these instructions and those published by battery manufacturer and manufacturer of any equipment you intend to use in vicinity of battery Review caution...

Page 2: ...vable cell caps such as valve regulated lead acid batteries carefully follow manufacturer s recharging instructions 3 5 Study all battery manufacturer s specific precautions while charging and recommended rates of charge 3 6 Ensure voltage of the battery is 12V by referring to the vehicle s owner s manual 4 CHARGER LOCATION 4 1 Locate charger as far away from battery as DC cables permit 4 2 Never ...

Page 3: ...n reverse sequence of connecting procedure and break first connection while as far away from battery as practical 7 7 A marine boat battery must be removed and charged on shore To charge it on board requires equipment specially designed for marine use 8 GROUNDING AND AC POWER CORD CONNECTIONS 8 1 This battery charger is for use on a nominal 120 volt circuit The charger must be grounded to reduce t...

Page 4: ...ows the voltage at the charger battery clamps in DC volts CLAMPS REVERSED red LED flashing The digital display shows error code F04 indicating the connections are reversed BAD BATTERY red LED solid The charger has detected a problem with the battery and the digital display shows a corresponding error code See Troubleshooting for more information Charging Status LEDs 12V CHARGING green LED off The ...

Page 5: ... AC DC cables away from any fan blades belts pulleys and other moving parts 8 Connect the battery following the precautions listed in sections 6 and 7 9 Connect the charger to a live grounded 120V AC outlet 10 Press the POWER ON OFF button 11 Select the charge rate 12 Press the START STOP button to begin charging immediately If the 6A CHARGE rate or the 30A BOOST rate is selected charging of the b...

Page 6: ... BAD BATTERY red LED will light COMPLETION OF CHARGE Charge completion is indicated by the 12V CHARGING green LED When lit the charger has switched to the maintain mode of operation MAINTAIN MODE FLOAT MODE MONITORING When the 12V CHARGING green LED is lit the charger has started maintain mode In this mode the charger keeps the battery fully charged by delivering a small current when necessary If ...

Page 7: ...p to 5 seconds Cool down After a 3 minute ready period the charger enters a mandatory 3 minute 180 second cool down state The digital display indicates the remaining cool down time in seconds It starts at 180 and counts down to 0 After 3 minutes the digital display will change from displaying the countdown to displaying rdy After 2 hours of engine starting the unit will automatically reset to Test...

Page 8: ...he battery clamps from the vehicle 13 Connect the unit to a live grounded 120V AC outlet to charge the internal ultracaps and lithium battery TESTER AND CHARGER MODES When first connected to anAC outlet the POWER ON OFF button is pressed and after the ultracaps are fully charged the unit operates only as a tester not as a charger Pressing the START STOP button deactivates the tester mode and activ...

Page 9: ...event corrosion Occasionally cleaning the case of the charger with a soft cloth will keep the finish shiny and help prevent corrosion Store the charger unplugged from the AC power outlet and powered off in an upright position Coil the input and output cords neatly when storing the charger This will help prevent accidental damage to the cords and charger Store inside in a cool dry place Do not stor...

Page 10: ...ot turn on when 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 loose fitting plug Short or no start cycle when cranking engine Drawing more than the engine start rate Failure to wait without cranking during the regular 3 minute cool down cycles Clamps are not making a good connection...

Page 11: ...y voltage drops to below 10 8V 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 To reset the charger unplug from the AC outlet wait a few moments and plug it back in The battery may be defective Have battery checked or replaced The battery may be overheated If so allow the batte...

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