DC Battery Monitor, DROK DC Amp Meter 6.5-100V 12V 24V 48V 100A Digital Multimeter, Voltage Current Power Energy 4-in-1 Tester Gauge DC Volt Amp Watt Detector with LCD Display and Shunt

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INSTALLED YESTERDAY, Using with My Solar PANEL CHARGING SYSTEM.. I validated itg against the Fluke Multimeter and the AMP and Voltage readings are indeed accurate. The ampere meter link takes the entire circuit current through it so one must not overload the device. It says its good to 100a. I have 51 amps I am sending through it and it works great.

The product seems pretty cool, I have only hooked it up to view the display not wired it in to validate full load and amperage usage. I am a bit disappointed in the ability to view the display if you look at it from more than about a 30 degree angle.I will have to find a place to mount it that will either be eye level or will have to bend down parallel to eye level to be able to read the display.I did see this comment in other feedback so it was not a complete surprise, but I was hoping it wasn't going to be as bad as it was for viewing. I am not rating it much less on the stars however as it is so cheap from a cost perspective, it would make sense that it wouldn't be the same as other products that are 4 times the cost for something similar,

Installed this on our travel trailer to monitor battery usage while boondocking. As suggested by another user, I used a cat5 cable to connect the current shunt to the meter. Comparing this to a Fluke DMM, voltage is a little lower on this unit, but I suspect this is a problem with my DMM, not the unit.Of course, the operation is as advertised, but most notably (at least for me) is the effect this device had on the other campers staying with me. For the first time we are able to see how much power is being used and it has caused everyone to be more conscious about conservation. Everyone is now interested in driving the power usage down whenever they wander by the meter. 3 days of boondocking, and we only used ~ 400WH out of ~1200 WH capacity (voltage was at about 12.55V)The only question I had (have) is what is the best wiring arrangement. The current sensing is easy, but with two batteries in parallel, what is the best way to wire the voltage monitoring leads? I would like to capture the power consumption of the meter, so I tied the negative lead of the voltage sensing to the positive lead of the current shunt. I think this means I will read up to 75mV lower than actual, but I figure this is better than not capturing the 10-20mA of current the meter requires.Overall, I am very happy. If only this meter could read charge power as well, it would be perfect.

I bought this as a basic power meter for my lithium battery & inverter system in an RV. After hooking it up, I realized it only works in one direction. It shows discharge power, but it shows ZERO when charging. If you hook it to the shunt up in reverse, then you see charging power. So I thought, OK, just buy two of them, they are cheap, and one shows charging, and the other shows discharging.That is actually a dumb solution. Drok makes a power meter that does that and more. It shows power in both directions, positive and negative power delivery, and also calculates battery capacity, based on the actual energy usage, and your battery's capacity. Once I realized this, I returned this item, and got the other one.This meter itself is actually pretty good, showing 4 important parameters at once on a nice display. It's accurate, and it works well. It has a few basic functions, accessible from the button (which you can't press with a finger, must use a pen to press it) including the ability to reset the energy counter. As a multimeter, which is what it is described as, it's perfect. As a battery meter, it falls short, but that's my mistake for choosing it as a battery monitor.The main downside is the display. Unfortunately, as with most small LDC displays like this, it's a low-quality supertwist display with poor viewing angles. So if you view it from below eye-level, you can't see anything. If it had a 'contrast' setting, you could fix that, but of course it doesn't. This is mounted at knee-level, so to view it, I have to get down on the floor. Gets old fast.The Drok battery meter I replaced it with has the same issue with the display. It's ok, I'll just take it as an opportunity to get down on the floor and do some yoga or push-ups or something.

My application required a multimeter to constantly show the voltage and amperage being used. I have this hooked up to a 12v 500watt power supply. I use this to test various LED light strings. Although these meters are rated up to 100amps, I have only maxed out at 22.41 amps as seen in the picture.These meters are very easy to set up following the included instructions. I was able to have this permanently hooked up to my power supply in a couple of minutes, with the most amount of time spent on measuring wire. I do not have any negative things to say about this product.