The Renogy 500A Battery Monitor with Shunt was received in good condition. It was professionally packaged and is of good quality. My application is the off-grid power source for my well. The input is 860-Watt peak solar array, output through the batteries to a 3000-Watt, 230 Volt AC inverter to power my well pump. The on-time duty cycle of the pump is low. Follow the instructions and connect both the C- charge source and the P- Output (load) to the Shunt sampler P- terminal. Also "Teach" your battery bank capacity to the monitor per the instructions. Keep in mind that the Amp reading and Watt reading is the Net current and Net power. Example; you may have 10 Amps coming from the charge source, but a 4 Amp load so the Battery monitor will read +6 Amps going to the battery. With no charge source current (solar panels in the dark) the meter will read -4 Amps for the same load. Think of it as the old center 0 analog Amp meter, but with much more useful tracking of the Net Amp-hours going in and out and percent of remaining capacity of the battery bank. It should be used with a quality charge controller that has an Amp meter so you can distinguish the total solar power output. My charge controller cable going to the sampler P- terminal is AWG 4 because my solar array is capable of 52 Amps peak output. My load cable going between the sampler P- terminal and the 3000-Watt inverter is AWG 2/0 because it can draw over 250 Amps.

My only complaint is the mounting of the meter itself. It is designed to be snapped into a panel rectangular cutout dashboard rather than surface mounted on a wall. I Macgyvered a mounting bracket for it from what I had available.

Overall, it is good value, good quality, accurate and reliable.

I have been running this monitor in my RV for over a year now and it continues to work great. I mounted the shunt on the wall behind the batteries and there was enough cable to install the display above my circuit breaker box about twelve feet away. It looks like it came from the factory that way. Installation was straight forward.

I have 228 Amp Hours of batteries and it is so easy to monitor them now. I like the provided metrics, the +/- indicator of how many amps are being charged or drained, how many watts are being consumed, the estimated time (hours:mins) remaining until zero, and the battery percentage. Since I'm running lead-acid batteries I have to keep them above 50%.

My $150k RV has a dumb battery meter that tries to guess capacity from voltage. Adding this meter gave me actually useful info. It’s awesome how it seamlessly switches between time remaining (when on discharge) to time until full (when charging). It’s been flawless.

I 3D printed a small housing for it and it looks right home in my RV.

The shunt was easy to install and can handle big current without adding resistance. I looked at cheaper options and they came with bad shunts, small screws/lugs, and got poor reviews for reliability. Don’t do it- just get the Renogy.

Nice design. Well packaged. Clear instructions. Simple interface. Good screen layout. Adjustable backlight. Good screen contrast.

The shunt is factory calibrated by filing on the edge of the resistive element. This was expected. But compared to my calibrated current meter it is off by about -10%. Meaning it reads current levels about 10% lower amplitude than actual. It is symetric around 0 though, so charging and discharging % is correct as long as the battery capacity is derated by 10% also. And since it is -10% that means I could file it some more to bring it in to spec. But I decided to just leave it as is. My old setup used a hall sensor which was very accurate in the charging polarity, but as I eventually discovered it was way off in the discharging polarity. Having a symetric current sensor is much more important than having a perfectly accurate current sensor.

According to the box there is a 350A model available which would have been better for my application, but I could not find that version for sale.

My only gripe is that I wish there was an alarm output. Something that changes state when the low voltage alarm is active.

Just a backgroud. I had purchase 2 of the L**X brand, the full color version. Looked great. But the menu was no longer the one that they have now. It seems there are 3 versions and no one has the one I had. They never tid work based on extensive instructions from the selle.

FAST FORWARD TO RENOGY! EXCELLENT ALL THE WAY AROUND!

For the two I had, I swapped out thee shunt, did a little rewirie to clean up the backup battery setup, connecte dthe Renogy and it powered on. The default Ah is 100 and that's what I have. All set up with nothing else to do! Aftre about 15 hours of work on the others with no results, I am AMAZED. Now THIS is how you do it.

I did the soemwhat more difficult replacement in my ham radio portable kit (inside a rack-mount case, where the shelves have to be removed). Replacing the shunt and everything else wasn't as easy, that not due to Renogy; my setup is compact and under layers and it is hard to get to things inside. But for making the mounting plate to replace the smaller piece I had, I just plugged in tin and there it was! Set the capacity (will need to redo after a full charge and there, right in the menu was an easy setting for the Ah, which took moments.

Everything works as it is supposed to and all very easy. Almost sets itself up once installed and powered

Love my Renogy suitcase panels and these are completely excellent.

The screen, when off, is a dim grayscale, but draws no current at all somehow. Looks fine in the light. The green screen wout be nice in high contrast plack and white or full color, but I only mention this to my low vision. I can do without the nice screen for this easy setup and bigger screen.

BUY THS IS YOU NEED A MOINITOR (OR TWO OR THREEE!)

So we ordered this Renogy Battery Monitor for our travel trailer. Overall it's a nice unit, but it can be a bit frustrating to set it up. One issue we faced was the length of the shielded wire from the shunt to the monitor. It is only about 19.6 feet long and we needed to add another 16 feet to it. The wire is not something that you go and pick up at any big box store. It's a tiny 26AWG with a shield around it. But we discovered that Amazon also sells a 26 feet version of this exact wire. https://www.amazon.com/dp/B082ZPGYHZ?psc=1&ref=ppx_yo2ov_dt_b_product_details

So we ordered the wire and sure enough it's the exact size and specs. as the Renogy wire. The only difference if that one end of the plug does not fit the Renogy. So, we used the end that fits the Renogy, then carefully cut the wire to the desire length and spliced it to the wire we had. It is important to take your time and be super careful when you cutting those tiny wires. It is best to solder them together and tape them good with electrical tape. Make sure you connect the shielded wired together too. Our works great and without any issues.

This meter is much more accurate than my Bluetooth app that came with EG4 WP 48V-100Ah battery, which only updates every 5 seconds and doesn’t tell you that they “hold back15% of the battery capacity. It’s got variable illumination modes and every metric is configurable…though it’s a little too easy to hold the up arrow and reset battery meter in the middle of your cycle. The other reviews are correct that the + wire to the battery is tiny and the hole in the shunt seems tiny-er…it will eventually fit if you have patience and make sure the set screw is backed ALL THE WAY OUT (keeeeep turning). It’s best to do this part first, before you mount everything so you can get to, and still see, the tine hole. Also, the posts on the 500Amp version are enormous so get ready to buy some huge ring terminals to fit as all load has to pull through the shunt so you’ll want to combine several load wires per connector. Also, they don’t tell you but you’ll need some big power wire as it’s not included (see pics-I had an old winch power wire that I cut to fit). I would definitely purchase again.

Great! It tells you in and out wattage and voltage really nice to see what the sun is doing and how you’re using it. And how long you can use it. That’s a big one! And how long to charge it. easy to install I like it

Bem acabado, gostei

Works great for me applications, boat and rv with this you control your battery power accurate, what is going out, and what is coming in

Items works well very happy

Delivered early! Works exactly as it should. Great product :-)

Eu precisei inserir um cabo de 10 m desde o Shunt, que fica atrás junto às baterias, até o painel que está na frente do MH. Funcionou direitinho, usei um cabo de rede Ethernet TP Cat-5E para isso e aos pares.

Fiz os ajustes de capacidade do banco de baterias, das tensões máxima e mínima, mas ele não me pareceu muito preciso para determinar a capacidade de carga em Ah do banco de baterias.

Me pareceu que ele usa apenas a tensão das baterias para essa estimativa de capacidade.

Mas resolveu o meu problema de saber o consumo de corrente e a carga que está sendo feita via o painel solar, alternador ou o carregador DC. Isso é bem eficiente, além da tensão das baterias.