I have a 2024 RAM diesel with 2 flooded battery parallel 12 volt system. The issue is occasionally (once in a month, for the past two months) the batteries drain overnight. Is the solution to install a shunt on each battery connected to a CERBO GX that can send an alert to the App when the battery voltage falls below 12.4 volts?
Bluetooth will not extend into the house, so I have determined I will need to CERBO GX for the Wi-Fi communication link. Do I need a BMV-712 to complete the system?
I would say the first step would be to determine what is draining the batteries. Your experience isn’t normal or expected to the point where you should need automation to tell you when to shut them off.
Installing a system like you are suggesting that will allow the low voltage alarm to be sent to you through VRM will do what you are asking but will not fix your actual problem. (you would only need one shunt, a SmartShunt would do, no BMV. Yes the van will need an internet connection to connect any GX device to VRM.)
Honestly it seems out of order to do this. How about first find the problem that’s draining your batteries, then find a way to maintain your batteries(shore power, solar, etc). Then install a GX system as a benefit, not as a work around to fix a bigger issue. Lead acid batteries treated this way will expire rapidly.
Please allow me to provide a little more detail. The parasitic draw is not constant. It seems to be a computer module (there are over 100 modules on this vehicle), which is intermittently causing the drain. A technician can’t isolate a drain when it’s not present at the time of troubleshooting.
I need to know when the drain is happening at that moment, before the battery goes to 6 volts. This drain is so large that it drains the two 1000 amp batteries within 24 hours. Otherwise I can drive it for several weeks, or allow it to sit for a week with no issues, before it drains the batteries. Once the batteries goes to 0 volts the computers/modules/relays reset and the drain is not present. After charging the batteries, the drain is not present. Both batteries were replaced 1 month ago and they pass all tests at this time.
The idea of installing the monitoring system is to know when the drain is happening so it can be isolated during the time frame it is draining the batteries. A fully charged battery has a charge of 12.6 volts. When the battery charge level falls below 12.4-12.5 volts, I would hope the battery monitors will provide me with an alert to give me time to begin troubleshooting the issue before the batteries drain again.
Once I have fixed my issue on my truck, I will install the system on my boat to monitor those batteries remotely.
I am open to any other troubleshooting suggestions. Thank you