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原帖由: Mark Neal ,

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I agree with oldturkey03. The basic way of testing a battery is to look for the positive and negative terminals. Then use the probes of a voltmeter or a multimeter to connect with the right terminals. Grounding a resistor is needed to give a small load to the battery that will help you test it. If your device don’t provide a result, it means the battery is dead or your doing it wrong.  Here is the resource where [https://batterymanguide.com/|this website] provides  more.

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