1-10PCS 1-8S 1/2S/3S/4S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Display Electric Vehicle Battery Power Tester

1-10PCS 1-8S 1/2S/3S/4S Single 3.7V Lithium Battery Capacity Indicator Module 4.2V Display Electric Vehicle Battery Power Tester

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