Renogy500A Battery Monitor with Shunt, High and Low Voltage Programmable Alarm, Range 10V-120V up to 500A, 20ft Shielded Cable, Compatible 12V Lithium Sealed, Gel, Flooded Batteries,Black

works excellent & is easy to use.i have 2 of them

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 quality works perfectlyRenogy makes good quality products

PRO: Very pleased with the one screen display that shows all without having to scan through multiple screens. Now I have a good idea about remaining battery life.CON: Difficult installation. Method of mounting the monitor leaves a lot to be desired. No hardware to hold it in place; it's designed to snap into the hole cut to mount it. The result is that it is a little loose and wiggles around.Manual is minimal. It is not intuitive or fully explained how to set voltage alarms or battery amp hour rating. Customer service talked me through performing set up over the phone.Included cable is not quite long enough (20 feet) to go from battery to the wall I intended to mount the monitor on. Had to either settle for a different location away from my other controls and monitors or splice additional wire to the cable so it would reach. I noticed that another battery monitor sold on Amazon includes a 26 foot wire instead of 20 feet. That would have been long enough.It would have been very handy and relatively easy to include a template for cutting the mounting hole. It took much longer having to measure and cut without a template. Having a template might have provided a tighter fit with less wobble in the mounting.I am very pleased with the operation and information the monitor provides. Not so pleased with the installation and set up. It's a good value for the money spent.

Set up is quirky but...it is worth it. It is false that they only work with Renogy batteries. I do not have Renogy batteries and it works just fine with my two Power Queens. Although it is not very intuitive (to me) on setting up the monitor itself, their phone tech support was excellent. Installation was simple and quick. I first started out with a 12.8 VDC/200Ah Lithium battery and with a little tech support from my son, I got it to read the right battery capacity and SOC after setting up the menu options. Then I added another identical battery four weeks later and I was lost since it didn't show 400 Ah on the screen. I call to Renogy helped me reset the monitor and it all showed up on the main screen as 400Ah!

Bought this to monitor the batteries on my ryobi lawnmower when I changed from lead acid to LiFePo4 batteries. It worked when installed, then I put it the test by mowing my lawn. While mowing I was able to review the current draw and total usage as expected. After mowing I plugged in the charger and was able to see the charging current. When charging was complete I turned off the charger and let everything sit till my next mow.After sitting for a week the info coming from the shunt to the app was stuck at the end of the charging cycle. It showed 0.1A charging even though the charger had been shut off for a week. Even while I was mowing and discharging the battery nothing changed in the app. I can probably resolve this by resetting the shunt, but that is not acceptable since it defeats the purpose of the shunt. Resetting it render the current state of the of the battery irrelevant and will likely eliminate the historical data. This also a terrible option for me because the reset button on the shunt is very difficult to reach..To add insult to injury, the reason I bought the Renogy shunt over the Victron smart shunt was because the Renogy was less expensive when I purchased, but now the Victron shunt is $20 cheaper than what I paid for the Renogy.

Good unit, does what I need it to do. It wasn't reading right (on the amp hours reading) when it was first installed. Couldn't troubleshoot it myself with the manual. I called Renogy tech support and the guy walked me through the settings. Very helpful support. Now the monitor works like a champ. Very pleased with the monitor now.

This is a must have to your camper battery bank. It was super easy to install remotely and I love the Bluetooth. Now without installing a whole monitoring system, (which is better but harder and more invasive to install) I have an accurate power supply monitor with the app on my phone. WAAAAYYYY more accurate than the 4 little lights on the camper status panel.