Get the Zoyi ZT-XR1 (Amazon) 👇
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Get the Zoyi ZT-XR1 (AliExpress) 👇
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Are your batteries secretly dying? The Zoyi ZT-XR1 multimeter instantly reveals whether your 18650 and 21700, and any other cells are healthy, weak, or just plain fake.
In this video, I put it to the test with real batteries and show you how internal resistance measurements can save you money and keep your gear running at full power.
