Fluke 1650B [43/62] Warning

Electrical Installation Tester

Maintaining the Tester

Testing and Replacing the Batteries

Battery voltage is continuously monitored by the tester. If the voltage falls below

6.0 V (1.0 V/cell), the low battery icon B appears on the display, indicating

that there is minimal battery life left. The low battery icon continues to appear

on the display until you replace the batteries.

XW Warning

To avoid false readings, which could lead to possible electric

shock or personal injury, replace the batteries as soon as the

battery icon (B) appears.

Replace the batteries with six AA batteries. Alkaline batteries are supplied with

the tester but you can also use 1.2 V NiCd or NiMH batteries. You can also

check the battery charge so that you can replace them before they discharge.

XW Warning

To avoid electrical shock or personal injury, remove the test

leads and any input signals before replacing the battery. To

prevent damage or injury, install ONLY specified replacement

fuses with the amperage, voltage, and speed ratings shown in the

General Specifications section of this manual.

To test the batteries:

1. Turn the rotary switch to the V position.

2. Press 3 to initiate the battery test. The Voltage function display clears and

is replaced by the measured battery voltage in the secondary display for 2

seconds, the Voltage function display then returns.

To replace the batteries (Refer to Figure 23):

1. Press O to turn the tester off.

2. Remove the test leads from the terminals.

3. Remove the battery door by using a standard-blade screwdriver to turn the

battery door screws (3) one-quarter turn counterclockwise.

4. Press the release latch and slide the battery holder out of the tester.

5. Replace the batteries and the battery door.

Note

All stored data will be lost if the batteries are not replaced within

approximately one minute (Model 1653B only).

6. Secure the door by turning the screws one-quarter turn clockwise.