BT520 Users Manual Supplement
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Battery Test Probes
To connect test probes to the battery pole:
1. Use the inner tip of the test probe to touch the target surface.
2. Push the test lead to set-back the inner tip, until both the inner tip and the outer tip are fully
connected to the target surface. This will ensure a proper 4-wire connection to the battery
terminal.
Note
Stable and correct readings are shown only when both the inner tip and the outer
tip of the test probe are fully connected to the battery posts. To get more
accurate battery internal resistance reading, do not connect the test probes to
screws. See Figure 3-2.
Examine for open fuse before mΩ measurement by connecting the outer tips of
both probes. If the mΩ reading changes from OL to dashes and then backs to
OL, the fuse is good. If mΩ reading remains as OL, the fuse is open and needs a
replacement.
In this function, the voltage between the positive and negative poles of a battery
must be < 60 V. A voltage >60 V causes the fuse to open.
hsz008.eps
Figure 3-2 Connect Test Probe to Battery
Small Hole Cylinder Screw Cube
Circle StripCylinder Clamp
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