nuckolls.bob(at)aeroelect
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 Posted: Wed Mar 07, 2012 10:06 am Post subject: Compare 500Amp Carbon Pile vs. 100A Battery tester |
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At 11:30 AM 3/7/2012, you wrote:
| Quote: | Bob,
Would you give us a short comparison of the Harbor Freight 500 A Carbon Pile vs. 100A Battery Tester. I realize that the Carbon Pile has more features, but are they valuable and worth the price difference?
Thanks for your valued advise,
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BOTH have good value. The feature of most value in the carbon pile tester
http://aeroelectric.com/Pictures/Battery_Testers/HF_Carbon_Pile_Load.jpg
. . . is the ability to do quantified testing in that is related directly to the battery's ability to crank an engine. You increase the load to depress battery voltage to the bottom of the green arc associated with the battery's present temperature. Hold for 15 seconds (timer built into the tester). At the end of 15 seconds, observe current delivered. This is a quantitative benchmark that you can use to judge the battery's condition months from now.
The fixed resistor load . . .
http://aeroelectric.com/Pictures/Battery_Testers/HF_Resistor_Load.jpg
delivers similar data . . . it's in the same church but a different pew. I recommend the extra bux. I own two carbon pile testers. I've got a $high$ example in my shop and an HF tester in my son's shop in Wichita.
See http://aeroelectric.com/Pictures/Battery_Testers/ for pictures of the innards
Bob . . . [quote][b]
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