Review on 🔋 12V Lead Acid Battery Capacity Tester LCD Meter - Blue with SMAKN Acid Battery Indicator by Chris Mania

This is a cute little meter that does the job it was designed for - it shows the percentage of battery remaining and nothing else. If you want to know the voltage, you will need a voltmeter instead of or in addition to this device. I was looking for a digital readout voltmeter and found some nice little gauges. The gauge is clearly designed for installation from the back of the panel. If you try to install from the front, the "bezel" won't be big enough to cover the edges of your cutout. The screws holding the flowmeter block together are also visible. If you are mounting it in a panel, make a cutout big enough for the blue part of the display and of course drill holes for the mounting screws. The display rises slightly from the black plastic panel by about 1/32" (1mm) and measures about 1 11/16" (43mm) long and 15/32" (11.5mm) wide. The standoff from center of hole to center of hole is approximately 2 7/32" (58mm). Although not shown, there is a thin brown protective paper covering the black portion of the gauge which can be easily removed if necessary. Boring technical nonsense. Many of you won't be interested in this part of my review, but since I'm electronics savvy and I know some of you are too, I've included it.I have two of these meters and have tested them alongside my regulated power supply ". Both meters show the same percentage no matter where I set the voltage. I then hooked up two uncalibrated multimeters and measured the voltages in a few percentages. The multimeters differed by about three to four hundred volts, so I just did it averaged, rounded and the values written down to just a tenth of a volt. These are my results, but yours may vary slightly. 100% = 13.1 v90 = 12.880 = 12.670 = 12.360 = 12.050 = 11.740 = 11.530 = 11.220 = 11.010 = 10.70 = 10.4 Just below 10.4 V the display lighting also goes out. The display's backlight is fairly bright, but can be reduced by swapping out the two surface mount resistors labeled "511". These are the only two 510 ohm resistors on the board and they are very small so a sharp iron and eyes are the minimum requirements to accomplish this feat. Since the 12v model wasn't available when I ordered the second block, I bought the 24v model and added a jumper to the pads marked "C" to get to my 12v block to fit. "A" was already a jumper. In the photos showing the back of the board you can see the corresponding jumpers, actually soldered jumpers. Generally a good meter for your money.