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Check procedure 2:
This measurement can be done with a slow voltmeter.
600 W to the DC output (when the current of the connected system components is known), then take care that
the total current is approximately 5 A. Do not measure a too long time to avoid reducing the battery’s capacity
too much.
Measure the voltage of each cable path while the load is connected.
Measuring Points
Touch the battery contacts and the screw tops of the battery connector of the VX-3000DS with the measuring
tips as shown above.
Do not measure the voltage at the cable clamps, because in this case the contact resistance is excluded from
the measurement.
Measure the voltage on each path (it may contain a fuse).
Add these voltages and divide by 5 (5 A current).
tighten it. Alternative: max. voltage = 20 mV.
Example:
Current I = 5 A, measured voltages: 1 : 120 mV, 2 : 10 mV, 3 : 50 mV
The total resistance is too high. Since path 1-1 has a much higher resistance than path 3-3, its connection
should be checked.
Measuring the battery’s internal resistance
impedance is double than typical, then the battery should be exchanged.
1
2 2
3
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Battery
VX-3000DS
Battery
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