Model 88 V
Users Manual
54
Measuring System Voltage
Bleed the surface charge from the battery by turning the
headlights on for 1 minute. Measure the voltage across the
battery terminal with the lights off. When possible,
individual cell specific gravity should be checked with a
hydrometer. A load test should be done to indicate battery
performance under load. Voltage tests only tell the state of
charge, not the battery condition. To measure system
voltage:
1.
Insert test leads in the input terminals shown in Figure
18.
2.
Set the switch to
V
.
3.
Turn on lights for 1 minute to bleed off surface charge.
4.
Turn lights off and touch probes to circuit.
5.
Read the display. A fully charged battery typically
shows about 12.6 V. See other typical values in Table
9.
Table 9. Battery Charge Voltages
Voltage %
Charge
12.60 to 12.72 V
100
12.45 V
75
12.30 V
50
12.15 V
25
Readings obtained at 80
°
F (27
°
C)
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