Review on WonVon 100A Smart Battery Monitor - RV Battery Monitor with Shunt | High/Low Voltage Programmable Alarm | 0V-120V Battery Support | Bluetooth Enabled | Compatible with 12V Lithium, Sealed, Gel, and Flooded Batteries by Will Randles

This is a great monitor. Easy to install, easy to use. The installation is quite easy. In fact, the most difficult thing is to find a suitable place to install the shunt, which should be close to the control box, since the wires for connecting it are only a few centimeters long. I found that I could connect the shunt directly to the battery terminal and install the control box on top of the group 24 battery compartment and still close it. You have to route the wire where you want. Install display. This is a typical phone cord that requires about 1/2 inch diameter holes to feed through the end fitting. The display is flush mounted and needs to be cut out. I have it monitoring both batteries in my bank, compared to the built in gauge that came with the camper it is a much better device. It shows MUCH more information - the most useful to me is that it shows if you are charging or discharging and at what rate. This is REALLY useful when we're running on solar power, as it tells us if we're producing enough electricity to keep the batteries fully charged. Pretty cool - allows you to see the same info on your smartphone The range is pretty impressive - I have an RV parked near my house and I can access the app from my sofa and check the battery status anytime I had an issue with mine Shunt and they immediately sent me a replacement. The part was also shipped from the US so I quickly got to work. All in all a highly recommended upgrade!