Schumacher SC-6500A 用户手册

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This battery charger has a built-in battery 

tester that displays either an accurate 

battery voltage or an estimate of the 

battery’s relative charge based on the 

battery voltage and the Battery Council 

International scale.
TESTING SEQUENCE

There are four basic steps required to 

use the SC-6500A as a battery tester.

1.  Connect the charger battery clamps to 

the battery. Be sure to follow all of the 

precautions listed under “OPERATING 

INSTRUCTIONS”. 

2.  Connect the charger power cord to a 120V 

AC 2-prong wall outlet. Again, be sure to 

follow all of the precautions listed under 

“OPERATING INSTRUCTIONS”.

3.  If  necessary,  press  the  BATTERY 

TYPE  button  until  the  correct  type  is 

indicated.

4.  Read the voltage on the digital display 

or press the DIGITAL DISPLAY button 

to  set  the  tester  to  BATTERY  %  and 

read the battery percent.

When first turned on, the SC-6500A oper-

ates only as a tester, not as a charger. To 

continue to use it as only a tester, avoid 

pressing the CHARGE START switch 

button. Selecting a charge rate activates 

the battery charger and deactivates the 

tester. Pressing the CHARGE START but-

ton when the ENGINE START LED is lit 

(except during the 180 second cool down) 

will shut off the charger and activate the 

tester.

If no switch button is pressed within 

15 minutes after the SC-6500A is first 

powered up, it will automatically switch 

from tester to charger, if a battery is 

connected. In that case, the charger will 

be set for the small battery rate and 12V 

REGULAR battery type.

If either the DIGITAL DISPLAY or BAT-

TERY TYPE button is pressed within the 

first 15 minutes after the SC-6500A is 

powered up, it will remain a tester (not 

a charger) indefinitely, unless a charge 

rate is selected.
TESTING AFTER CHARGING

After the SC-6500A has been changed 

from tester to charger (by selecting a 

charge rate), it remains a charger. To 

change the SC-6500A back to a tester, 

press the CHARGE START button until 

all charge rate LEDs are off.
TESTER STATUS LEDs

When the SC-6500A is operating as 

a battery tester, the status LEDs light 

under the following conditions:

•  The CHARGED (green) LED will light if 

a charged battery is tested. 

•  The CHARGING (yellow) LED does not 

light in the battery test mode.

•  The  CONNECTED  LED  lights  when  a 

properly connected battery is detected. 

•  When the tester digital display is set to 

VOLTAGE, the CHARGED and CHARG-

ING LEDs won't light (it could be testing 

a battery or an alternator).

When a battery % is calculated for the 

first time after connecting a battery, the 

digital display will show three dashes 

(“---”) for a period as long as several 

seconds while the tester analyzes the 

battery.
NOTES FOR TESTING BATTERY %

A recently charged battery could have a 

temporarily high voltage due to what is 

known as “surface charge”. The volt-

age of such a battery will gradually drop 

during the period immediately after 

the charging system is disengaged. 

Consequently, the tester could display 

inconsistent values for such a battery. 

For a more accurate reading, the surface