Review on 📊 bayite Pack of 5 Three-Wire Calibratable DC Mini Voltmeter: Monitor Car/Motorcycle Battery Voltage with 0-30V Range, Mountable Tester Gauge, 0.36" Blue LED Panel Display by Ron Turner

I love these displays, they work pretty well for their money. I do a lot of research with cells and I always want to have an idea of their voltage. Note: If you really need to measure low voltage, e.g. B. below 3 volts, you need an external power supply or battery. to power each display. This makes sense because if you test a dead (zero) battery with these displays, you won't see any data. above 3 volts they work as expected. One thing to note: I had to calibrate one of the blocks. I compared the readings with my digital multimeter and it turned out to be slightly lower than the real ones. Otherwise they were in perfect condition. Based on my experience, I can recommend these displays and will most likely purchase more in the future.