Battery tester  Volt meter
Free     Myminifactory     CreativeElectronics

Battery tester / Volt meter

This is a voltmeter Battery tester! Ive a Youtube Video about this 2 in 1 Voltmeter necessary materials 2 parts made with 3D Printer Panel meter ...

similar models —

Battery tester / Volt meter alternatives
Arduino Battery Tester
joshuacarmack