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DC Multi-function Battery Monitor Meter with Voltage, Current, Power, Energy and Current Direction
- This power energy meter can measure DC voltage, power, energy and current with all-in-one device, and clearly display with green LCD screen.
- Reverse direction indication for current and energy, and the energy direction is judged according to the current direction, featured as bidirectional ammeter.
Built-in Shunt and Embedded Installation
- Built-in shunt and embedded terminal installation ensures the security to a large extent.
- Extremely simple wiring mode is designed for added convenience
HTN 180° Viewing Angle LCD with Green Backlight
- LCD Display: Large-screen LCD with a full sight of 180° view.
- The green backlight can be turned on/off manually by short pressing the key.
- Data preservation when power off.
- Data overflow holding, clear data by long pressing the key for 3 seconds.
Reinforced PBT Material
Reinforced PBT material with high temperature resistance ensures its wide application for photovoltaic inverter, assembly line test, RV, DIY electronic maintenance and so on.
Wildly Application
- DC multi function battery monitor meter wildly used for solar system/ industrial assembly line / Automobile RV etc.
Dimension Diagram
- Panel: 85.3×44mm/3.36×1.73in
- Body: 81.3×40.2/3.20×1.58in
- Opening size: 81.7×40.6/3.22×1.60in
Wiring Diagram
- Note1: The shunt must be installed on the negative side of the main circuit.
- Note2: Independent DC5-12V power supply is required only when the test voltage is lower than 8V.
Sunglass Evaluator
September 3, 2025
This is the only device like this I have found that includes Plus and Minus current and wattage, and the total accumulated energy usage goes up or down accordingly, so it automatically shows you when you have recharged as much energy as you have drained, and then how much more energy is added to fully recharge the battery, thus indicating the efficiency of the system. The accumulated energy can be reset at any time by long-pressing the button.A short press of the button toggles the backlight on or off, which is very nice, as the display is very readable without the backlight, with just a little external light; I rarely need the backlight, but it's nice to have when I want it.The accuracy is very good. I run separate small wires to the battery for the voltage reading, because at high current, even large wires drop significant voltage, and the voltage sensing wires carry extremely small current for high accuracy. Using a known accurate voltmeter at the battery, I consistently read the same voltage within 0.07V, i.e. if my VOM reads between 26.63V and 26.73V this unit displays 26.7V, and if my VOM reads 26.62V down to 26.53 this unit will display 26.6V. I wish it had the extra digit, and I would probably upgrade if they make one with the extra digit; however, the current unit does display down to 0.01A, which is excellent for monitoring the float-charge current, which is usually between 0.03A and 0.05A on my 6-battery 24V system after floating for a long time, because chargers will go to float at higher current levels than that, so it's nice to watch the current slowly drop all the way down over many hours before a true full charge is complete, and the batteries are fully de-sulfated.I like the built-in shunt for easy mounting. I have only used it up to 125A so far, and I have the 300A one. If it can indeed handle 300A without getting very hot, then the shunt must be a very low resistance, because if it were only 0.0001 Ohm, at 300A that would be 0.03V drop across the shunt and times 300A would be 9 Watts, and that would get very hot, so it must be even lower than that; the point is, it's best to get the highest-amperage meter/shunt in order to minimize the resistance and voltage drop, even if you don't need that much amperage.I am very happy with this meter, and I have already bought two more of them, but haven't used the other two yet.I hope the reviewers who had failures are not typical, and maybe they did something wrong; I hope, because I don't want any problems. I'll update if I do.
Daniel
August 22, 2025
Exactly what I expected. Used in a battery box set-up, and unlike others I have tired, it will show negative current when the batteries are charging.
Doug
August 20, 2025
I needed more accurage current reading than this meter, so can only give it 4 stars
Rob
June 7, 2025
Straightforward wiring & setup instructions, accurate meters, mostly wanted to monitor voltage on my 12-v battery as I'm using a ham radio in the park, but watching current utilization was added benefit. Nice degree of detail.However it worked perfectly for two mornings, and today, only the backlight works. Several dashes or underlines appear on the panel but no more data.Not durable.
J.K.
May 15, 2025
Wired mine to SAE plugs to check volts and amp draw of trolling motor, solar system, battery chargers, and any other DC load with an SAE junction. Pic shows 7.08 amp draw from car battery to trolling motor on lowest speed. Display is very clear and easy to read. Nice feature it will show negative amps when drawing from battery or positive amps when charging. If anything changes I'll update this review. Cheers!
Mom and Teacher
May 4, 2025
It seems to work for monitoring my 3 kwh solar array, although i cannot gauge its accuracy. The array produces max 100 volts at 30 amps and it reads at 2.8 kwh? I dont think its very accurate. Also, it breaks easily.I have a 12v power source as suggested, but when I tested a breaker on the negative pole (break the cirucit, engage the circuit), the shunt display decided to stop working after some interesting number displays and backlight functionality. It cant handle any type of spike. Its cheap AF, so sorta worth it?For 17 bucks, buy a couple I guess, the display will fail. However, the circuit is still closed and panels are working you just wont get monitoring. Im guessing the circuits in it were designed and built by 1st year electronics engineers with a cumulative gpa in their first semester of 2.5. There is no protection circuitry and they dont know what a reset breaker is. No wonder its cheap.
awsum140
April 19, 2025
I don't normally post a review for at least a week of using something like this but this meter is quite a good deal.My use case is low voltage and amperage, 6 volts and maybe 3 amps at a peak. That's at the bottom of the ranges of this meter but despite that the readings are accurate, say with +- 2%. To be fair none of the meters I am comparing it to are traceable to NBS, but at this price it seems quite accurate.It is a little on the heavy size due to the size of the shunt resistor for current measurement. Other than that I can't say anything bad about it at all.If you need a fairly accurate meter for voltage and current you can't go wrong with this one. The power reading and KWH total are icing on the cake!
Seishinkage
January 30, 2025
Like the title says, once you are about 15° of an angle above the screen the characters become unreadable. So will be best if it's at eye level or higher. Beyond that, this is probably the best screen for the price and specs I've come across. Works wonderfully in the new 3500W linear DC power supply I just built. Highly recommend.
Alejandro Castro
December 22, 2024
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