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Incorporated
Testing and Trouble Shooting
BATTERY EQUALIZER OWNER’S MANUAL
10
Test Procedure for Family 1 Battery Equalizers
Models 60-10B, 60-20A, 60-50A
CAUTION
To avoid Reverse Polarity Damage to Family 1 and Family 2 Equalizers when servicing the electrical
system or when performing any work which involves making battery connections always:
1. Remove Equalizer Ground terminal first.
2. Replace Equalizer Ground terminal last.
Family 1 Battery Equalizer Test Procedure:
1. Carefully remove the ground (GND) cable from the Equalizer. Do not allow this cable to touch any
other connection on the Equalizer because the other terminals are connected to the batteries.
2. Make sure there is approximately 12 volts between the +24 and +12 terminals of the Equalizer by
momentarily connecting the two terminals of a 12 volt light (headlight, marker light, etc.) to the +24
and +12 terminals of the Equalizer. The light should light and stay lit.
3. Next, connect that same 12 volt lamp between the +12 and GND terminals of the Equalizer. The lamp
should light and stay lit. If the lamp does not light, the light then goes out, or the light dims, the
Equalizer requires repair.
4. Further verification may be made by measuring the voltages on the Equalizer terminals. Be certain
that the lamp used earlier is connected between the +12 and GND terminals.
5. Measure the voltage b24 and +12 terminals. Note this reading.
6. Measure the voltage from the +12 terminal to GND. Note this reading.
7. Compare the two readings by subtracting the +12 to GND reading from the +24 to +12 reading. A
properly functioning Equalizer is one where the difference is between -0.5 and +0.13 volts. For
example, the +24 to +12 reading might be 12.85 volts. The +12 to GND voltage might read 12.75
volts. This Equalizer would be functioning properly with a 0.10 difference (12.85 minus 12.75 volts)
which is within specs.
Common Questions for Family 1 Battery Equalizers
Q)
Will operating loads which exceed the output rating of the Battery Equalizer cause the circuit
breaker (white button near the wiring terminals on Family 1 or Family 2 equalizers) to trip?
