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Old 10-14-2017, 02:37 PM   #1
1929
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Default 6 Volt battery test

I went to Nappa,Goodyear,Auto Zone and Advanced Auto, all said the Exide 18 month old battery was good. The green light was on my charger, but still the starter would turn too slow to start. I go to Pep Boys where they had a large tester on the shelve, not like the hand held everyone else used. The Pep Boys tester even gives a printed receipt, that showed bad cell. The guy behind the counter said that machine is 99% accurate. I believed him and went home to order a 6 volt Optima, the car started right up.
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Old 10-14-2017, 04:39 PM   #2
Crankster
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Default Re: 6 Volt battery test

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The hand held units are the conductance type testers. If they indicate a bad battery, it's bad. If they indicate a good battery, it might be .. but it might not. The large unit probably contains a carbon pile for a true load test. A load test requires a fully charged battery for accurate results. It's possible for a battery with a shorted cell to start the engine, but that's probably not the way to bet.
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