I'm not a mechanic but I have 8 cars and do quite a bit of mechanical work. As such, battery and charging issues become something I sometimes encounter. Frequently. Very, very often. This quickly leads to DC voltage and capacitance (load) tests as well as charging the generator. I'm older, so personally I prefer the analog display. I'm sure there are much better devices out there, but for the money and simplicity, this works great for me.
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