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Dave Munday

« Reply #7 on: Apr 24, 2024, 8:40 pm »
 
I have one of those pulse chargers, have revived one or two of my batteries.
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Nick Flint

« Reply #6 on: Apr 24, 2024, 11:27 am »
 
Thanks John those testers do have some interesting features, so registered for Aliexpress (finally) and eagerly await delivery and all the fun to come!  ;)
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Memories are BETTER than Dreams---"Capn" FLINT

John Robertson

« Reply #5 on: Apr 23, 2024, 2:32 pm »
 
And ... whilst on batteries, I've had great success in using a pulse "repair" type charger  for a few years,  It has successfully "repaired" 5 batteries that would charge OK but no longer had enough CCA capacity (they are all still in service).    The charger I got was a cheapo 6Amp one.
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John Robertson

« Reply #4 on: Apr 23, 2024, 2:12 pm »
 
A flooded battery should be 12.7 max.  If it's an AGM type then it could be 13.5V.  Better to use a proper battery tester rather than a multimeter as it will measure the capacity (current) as well as the charge state and general condition (internal resistance, etc.) all of which give a much better idea of the battery state.  You can get testers for around £20 or so for simple versions.https://www.aliexpress.com/w/wholesale-car-battery-tester.html?spm=a2g0o.home.search.0
« Last Edit: Apr 23, 2024, 2:21 pm by John Robertson »
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Al

« Reply #3 on: Apr 23, 2024, 11:24 am »
 
I always thought that a lead acid battery cell equalled 2.2 volts, so 13.2 would show it as fully charged, but electrics is far from my strong point. 
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Nick Flint

« Reply #2 on: Apr 22, 2024, 2:08 pm »
 
This is my reference point ref Lead acid battery 12.7V at 100%!
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Memories are BETTER than Dreams---"Capn" FLINT

Nick Flint

« Reply #1 on: Apr 22, 2024, 2:06 pm »
 
Included will hopefully show my M/Home habitation battery being tested for standing -resting Voltage. It was my understanding that this is simply not possible after approx one week uncharged or connected to my solar panel which only charges the engine battery.
I "presume" (always a suspect approach) that the tester is over reading? I have two cheapo ebay testers and they differ slightly but neither makes real sense to me.
Questions-
1 Am I missing something?- easily possible!
2 Do cheapo testers vary and or is there a recommended more accurate make of tester when I need more accurate results?
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Memories are BETTER than Dreams---"Capn" FLINT
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