They responded by saying that “generally speaking, the Battery Attention Ratio parameter does not need to be set.” I reached out to Renogy customer support to get some guidance. I haven’t seen this setting in any other battery monitor, so I was confused as to what it was and what value I should input. Lastly, there’s a very poorly explained battery attenuation ratio. For my 100Ah lithium battery I set the alarm to trigger when the capacity hit 10Ah. Then there’s the low capacity alarm setting, which you turn on by inputting the capacity at which you want the alarm to go off. Basing battery state of charge off voltage when the battery is connected to loads or chargers is quite inaccurate. The low power mode voltage was nice, but the capacity voltages were mostly useless. I tinkered around with these settings during my testing. There are a couple voltage setpoints you can set which reset the battery’s capacity to either 0 or 100%, and another which puts the monitor in a low power mode. Most lithium iron phosphate (LiFePO4) batteries have 100% usable capacity, so for my 100Ah LiFePO4 battery I set my capacity to 100Ah. usable) capacity, so for a 100Ah lead acid battery I’d recommend setting your capacity to 50Ah. Lead acid batteries typically have 50% effective (i.e. There you can input your battery bank’s effective capacity - “effective” being the key word here. Then hold OK for a few seconds to enter the settings menu. (You can also hold the down arrow for a few seconds to set state of charge to 0%.) You hold the up arrow for a few seconds to set your battery state of charge to 100%. The Renogy 500A is relatively easy to set up, largely because there aren’t that many settings to adjust. Connect the power cord’s ring terminal to your battery bank’s positive terminal. Then use a precision flathead screwdriver to secure the shunt’s included red power cord into one of the B+ terminals on the shunt. I use a properly-sized black tray cable to do this. You then connect the shunt’s “B-” terminal to your battery bank’s negative terminal. Then you friction fit the screen inside.Īt this point, I recommend you charge your battery bank to 100% and then disconnect all loads and chargers. To mount the screen, you use a jigsaw or drywall saw to cut out a rectangular hole in your wall. Or you can use the included screws and a drill to mount it to a wall. To mount the shunt, you can use double-sided mounting tape to tape it to the battery or a nearby surface. The Renogy 500A has a shunt and a screen, both of which should be mounted before setup. Renogy 500A Battery Monitor Review Installation
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