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how to test a battery?

453 Views 3 Replies 3 Participants Last post by  NCC74656
i just bought a new battery and wanted to test it to see how it differs from my old ones. what is correct and what is wrong in this video?

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when i search carbon pile i think i get hte same one as in the video: https://www.harborfreight.com/500-amp-carbon-pile-load-tester-91129.html

and this on amazon: https://www.amazon.com/710-Carbon-Pile-Load-Tester/dp/B000JFJLI8

how can i tell if it is or isnt with our reling on what an add says?
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