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Car Battery basics Part1

  • Andy.MacFadyen
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06 Jul 2018 11:41 - 06 Jul 2018 12:44 #21918 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Car Battery basics Part1
AC Impedance Automotive Battery Testers

These testers are have become very popular over the last 20years, they work by super imposing and AC square wave one the battery voltage to measure the the AC impedance of the battery and using this to estimate the CCA of the battery and remaining life left in the battery.
Impedance is the equivalent of resistance to an AC signal. In theory this type of tester will work on batteries that are below 50% charge.

I have been using this type of tester for about 5 years a RIng RBA50 Link to RBA50 on Ring Automotive UK Website


Using this type of test tool is simple
Step (1) Connect to battery
Step (2) Tester displays battery open circuit voltage, as a guide to state of charge of battery.
Step (3) Tester prompts to select CCA unit of battery ie CCA, EN, DIN....
Step (4) Tester prompts to select CCA value.
Step (5) Presss enter and test starts
Step (6) Tester displays Pass or Fail, % of Battery Life Remaining and Estimated Actual CCA.

The tool is powered by the batteries own voltage and using an oscilloscope reveals it places a 300mv AC 82hz square wave across the battery terminnals.



" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)



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Last edit: 06 Jul 2018 12:44 by Andy.MacFadyen.
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09 Jun 2019 12:13 #30548 by Billy R
Replied by Billy R on topic Car Battery basics Part1
Agreed !

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