Replacing The Battery - Midtronics MDX-655 Instruction Manual

Replacing the Battery

The tester can test down to 5.5 volts when the unit's internal batteries are not
functioning. The tester displays LOW INTERNAL AA BATTERIES, REPLACE AA
BATTERIES SOON! when the internal AA batsteries need to be replaced.
NOTE: Setup information will be retained while you change the internal batteries.
Use the following procedure to remove and replace the internal AA batteries.
1. Turn the tester face down.
2. Remove the screw securing the battery compartment cover using a small
Phillips screwdriver.
3. Lift the door off and remove the discharged battery.
4. Insert fresh AA batteries making sure the positive and negative terminals
are positioned correctly.
5. Reposition the cover and tighten the screw.
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