This is a preliminary review as I haven't installed it yet. This battery monitor appears very well made and complete. The fit and finish are above average, and the kit comes with instructions. However, in a review posted by a previous buyer on November 3, 2023, I have copied his instructions that were included in his review. I found these to be helpful and I plan on using them when I get to that point.I would buy this monitor again.I'll update this review when I get it installed.

Excellent meter. Lots of features. Shunt is big and heavy. So have adequate room to mount.

I got this to know what my small off-grid solar setup with 400w panels and two in-series 12v 100ah LFP batteries is doing. It failed. Very difficult to set up, impossible from the included instructions alone. Did calibrate it and set up parameters with the help of third party YouTube vids. Issue is, it shows steadily decreasing SOC, going from 100% to 0 over a few days with a constant 1a load, even though there's plenty of sun to bring the batteries back up to 28.6V after the nightly discharge of about 15%. Emailed support twice, opened a thread on their forum, waited a week with no response, and ripped it out of my system for being useless. If you do decide to take your chances with this, make sure to keep the box.

Me gustó mucho el producto, para configurarlo me apoye en videos de YouTube.

Easy setup, easy to see in bright sun,does everything as stated

At first this meter seemed daunting to install but in actual practice it is rather easy to install and get working. I do like the fact that it displays both output and input charge and estimates remaining battery time based on output rate. Very nice meter.

Instructions say connect the positive battery pole to the Bat+ of Shunt, and the negative battery pole to the "-" of shunt. That would create some really nice fireworks as anyone would realize that this is a dead short. So I don't know what universe some of the previous reviews came from but it definitely isn't ours. Further more the Chinese make very good products but they have yet to master the art of instruction writing as there is no clarity in them.

So far work very good, instructions are pretty lame I need the YouTube help to setup the unit but works after you setup you don’t need to do anything else

I got this shunt/coulometer to help monitor my new 250 Ah LiFePo4 battery for my small off-grid cabin. It seems to work okay, but there were no instructions in the box. I used the Amazon product listing, and YouTube videos to help set it up. It seems to be working fine. I figured out how to set the battery capacity, by trial and error.I think this is what I know... • The big green circle with the percentage inside: The life/charge left in the battery. • The tilted hourglass symbol: No idea! • The floppy disk icon with a number: No idea! • The large blue number followed by AH: the amp-hours of life remaining in the battery. • The 6-digit, time-stamp looking number: No Idea! (maybe hours, minutes, seconds left in battery at current load?) • Bottom Row: • First number: load/charge in amps. Negative means charging, positive means load going out. • Second number: Voltage of the battery. • Third number: Watts being used from the battery.I mainly got this to protect the battery and let me know how much charge is left. The color display is nice and looks more professional than the basic battery monitor displays. I also figured out how to lower the brightness of the screen, but would like to be able to turn it off when not in use, so it doesn't waste any battery power, but I think it is very minimal anyway. The solar panels can maintain this with ease.I also have no idea what the UIPC image is on the left.So, while writing this I tried one more internet search and found a manual. It is not a very good manual, but I think this is the right one.https://m.media-amazon.com/images/I/91iEI2GqGHL.pdfHope this helps. It is a good shunt and monitor. Both seem well built. Solid brass shunt with heavy duty bolts and connectors. I would have given it 5 starts if it came with a really good manual. I would get it again, now that I have a manual.

Being an engineer I see a lot of miss-information about these units, not just this one. Yes the so called "manual" is a sheet of paper written for someone who understands electricity, voltage and amperage. It's sparse and poorly written and it's hard to understand, especially if you aren't an engineer.That being said, it is a good unit, and it does what it says it will do. And no, it's not a power hog, the person complaining about that most likely didn't know there is a feature to "zero" the meter when no current is being drawn from the battery. Even with the manual it can be a little hard to setup, but once you do, it is pretty much smooth sailing from there. And these devices are a MUST if you really want to know what the state of charge is on your LifePo4 batteries. Lead acid batteries don't need this but can benifit from it's use.WHAT THIS UNIT DOES is measure CURRENT or AMPS being Put Into or Drawn Out of the Batterie/s. And this is important for Lithium type batteries. Think of this as a water glass monitor, when you use the batteries, your pouring water out of the glass, and when you're charging the batteries, your putting water back in, all the way to the top of the glass which is 100 percent charge. Current out is water poured out, and when it reaches zero, well the batteries are exhausted.BASIC SETUP: Press and HOLD the OK button until the setup menu pops up. Use the up and down arrow keys to switch between settings. Now move to the BAT setting and press OK, this enters the setup for the battery capacity in AH or amp hours. Use the down arrow to move to different number positions and use the UP arrow to advance / make changes to the number. Once your happy with your selection, press OK to exit that screen so you can use the up and down arrows to move to another screen. Example: if you have a 200 ah battery, enter "200" on the BAT screen and save.Next, move to the BPC screen, press OK to enter it and change the numbers to the state of charge of your battery, (if you know it). If you don't know it make a guess but it's easier if you fully charge the batteries before making this setting because that way you can set BPC to 100% which is fully charged. Press OK to exit that setting and Press and Hold the OK button for 5 seconds to save and exit the settings screen.Those are the main basic settings you must set in order to get accurate measurements from the meter.NOTE: You should also setup the LVP which is low voltage alarm setting, on a LifePo4 battery I recomment setting this to "11.2" which is just above total zero battery charge. If the voltage reaches this level, it will automatically zero the state of charge indicator.Set the CLR setting if the current reading is showing a current reading when there is no load connected. That is what this setting is for, to zero the no load current value.Set the OVP value to "14.5" or "14.4" as this is where LifePo4 Batteries are fully charged and the internal bms inside the battery should stop charging, thus a 100% full charge. If the voltage reaches this value it will automatically re-adjust the BPC setting to 100%.The PIA setting is related to the CLR setting and usually doesn't require adjustment.STE setting is in seconds before the screen blanks automaticlly. This is used with the STI setting.STI setting is the shutoff point for the display when the current falls below this value. Example: set to 1 amp when the value falls below 1 amp going into or out of the battery, the screen will blank in how ever many seconds you setup in the STE settings.I hope this brief explanation will help those struggling with these units.I will update if there is a problem in the future.