🔌 DROK Digital Multimeter DC Power Monitor, 6.5-100V 20A Voltage Amperage Power Energy Meter with Built-in Shunt, LCD Digital Display Volt Amp Tester Gauge Review

I was excited to be able to control the AMPS and WATTS that feed my boat's battery system from my solar array. This counter does just that, but there are a few caveats. First, the schematic is too simple for an installation that includes a solar panel, charge controller, battery pack, and power distribution system. It took me several attempts to get more than just VOLTS out of the meter. And then, after everything finally works, the screen turns out to be quite difficult to read unless you…

These things are bee knees. I have modified all my chargers on several diesel generators to charge through them. These are backup generators and starting on the first try is crucial. It used to be difficult to say exactly how good batteries were without stress testing or hydrometer readings. Those things are still important, but now we can see at a glance how the battery is performing and most importantly, how many watt-hours it's been using. If the voltage is low (on a constant voltage/limited

This little multimeter is really easy to use and very effective. I use it in my truck's electrical system to monitor battery status while the electric cooler is running. It is equivalent to a voltage regulator that cuts off power to the cooler when the battery voltage gets too low. This multimeter gives me a warning before the regulator does its job. Good to know when you arrive at that point so I can start the truck to charge the battery or turn off the cooler until we are ready to continue to

I have a 3 digit voltmeter that I use to monitor the 12 volt battery in my car. This is useful, but it could be 12.69 or 12.61, still accurate to three digits. In addition, this is not entirely correct. So I was looking for four digit accuracy in a voltmeter. The DROK counter is the solution I chose. This is a nice backlit display with an internal 20 amp shunt. Currently I'm only using the voltmeter function, so I can't comment on other functions. The voltmeter is accurate to within 0.05 volts…

I ordered this multimeter to hook up to a bike alternator so I can monitor the output when I press the pedal. Another reviewer wrote that it could be used to measure the power output of solar panels by connecting the panel to the input wires and the battery to the load terminals, and I did that too. The meter is really simple and I like that it stores the accumulated Wh readings even when it's not plugged in. I have not attempted to measure the accuracy of the readings, but they appear to be…

The meter works as advertised and for the price it is excellent value. Note that the ammeter is on the negative side between DC IN- and Load-. This is important if, like me, you're using a switch to reverse the polarity of the meter between charging and discharging the battery. The electricity meter does not work in reverse. In other words, the count only increases when positive current flows in the direction of DC IN+ to Load+. The current flows in the other direction, but the power and…

UPDATE: After observing the solar panel for about a month I decided to update my wiring to use the output side of my charge controller and not the line from the solar panel to steer . When I went to remove this from the circuit I was surprised to see that the stored energy field read 238Wh when it last read 1058Wh. It had to stay in the 4-digit Wh range or switch to kWh displays at most. There was no way my 15-watt panel could generate the roughly 9,998 kWh needed to rotate the display. Mine…