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8. Operation
a) Insert batteries
Make sure that the rotary switch (7) is in the OFF position. Open the battery compartment (5) on
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the back of the battery tester.
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Insert two 1.5 V AAA batteries into the battery compartment. Ensure that the batteries are
inserted in the correct polarity (+/-) as indicated in the battery compartment. The package
includes two 1.5 V AAA batteries. Close the battery compartment.
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Replace the batteries when the battery level indicator (1) shows only one bar, but at least
once a year.
b) Measuring the charge level
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The battery tester can measure batteries and rechargeable batteries with various voltages
from 1.2 V to 12 V. Check the technical data to find out which battery and rechargeable
battery types can be measured using this device. Remove the protective film from the LCD
display (6).
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Use the rotary switch to set the type of battery/rechargeable battery to be measured.
If the rotary switch is set incorrectly, although the voltage will be measured correctly,
the charge level and internal resistance will be displayed incorrectly.
Apply the measuring tip of the red test lead (8) to the plus pole and the measuring tip of the
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black test lead to the minus pole of the measurement object.
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The LCD display shows the charge level (2) in percent, the voltage (3) in volts and the
internal resistance (4) in mΩ or Ω.
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Once the measuring tips are removed from the contacts, the displays will be zeroed.
Set the rotary switch to OFF when the battery tester is no longer used.
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The battery tester turns off automatically after approx. 1 minute of inactivity. If a correct
contact with a measurement object is re-established, the battery tester will resume
operation. Wrong polarity prevents the battery tester from operation. If the rotary
switch is set to a new position, the battery tester will turn on again.
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