Schumacher 00-99-000886 User Manual
Page 12
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9
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Connect the charger’s power cord to a 120 VAC outlet. Again, be sure
2.
to follow all of the precautions listed under sections 6 and 7.
Read the voltage on the digital meter or press the DISPLAY MODE
3.
button to set the tester to BATTERY % and read the battery percent-
age.
TESTER AND CHARGER:
12.3
When first turned on, the charger operates
only as a tester, not as a charger. To continue to use it as only a tester,
avoid pressing the START/STOP button. The charger is always in tester
mode until the START/STOP button is pressed. Pressing the START/
STOP button activates the charger and deactivates the tester.
TESTING AFTER CHARGING:
12.4
After the unit has been changed from tes-
ter to charger (by pressing the START/STOP button), it remains a charger
as long as it’s connected to a battery. Press the Start/Stop button again to
change back to tester mode.
BATTERy PERCENT AND CHARGE TIME
13.
This charger adjusts the charging time in order to charge the battery com-
pletely, efficiently and safely. The microprocessor automatically makes the
necessary decisions. However, this section includes guidelines that can be
used to estimate charging times.
The duration of the charging process depends on three factors:
Battery State – If a battery has only been slightly discharged, it can be
13.1
charged in less than a few hours. The same battery could take up to 10
hours if very weak. The battery state can be estimated by using the built-in
tester. The lower the reading, the longer charging will take.
Battery Rating – A higher rated battery will take longer to charge than
13.2
a lower rated battery under the same conditions. A battery is rated in
Ampere-Hours (AH), Reserve Capacity (RC) and Cold Cranking Amps
(CCA). The lower the rating, the faster the battery will charge.
Battery Size – The charger automatically selects a charge rate up to 12
13.3
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 BATTERY % mode.
There are some important facts to keep in mind when charging a
battery:
When the display indicates 77% charged, the battery has been charged
13.4
enough to start most vehicles.
The battery % shown in tester mode is an estimate based on the battery
13.5
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.