Any help here would be greatly appreciated! We got a used TT that has a dual battery setup with solar and a kill switch on the battery case.
I’m trying to make sense of how it is wired right now, for some reason it makes no sense to me (especially that block at the top of the picture).
We want to set it up for boondocking with some use of the power inverter too. Is it setup right as is? Looks to be in series.
Those are 6 volt batteries combined to make 12 volts and a shunt to check the power usage and battery’s status , all the negatives go to one side of the shunt then the other negative from the battery goes to the other side
The block at the top is a shunt/monitor. Some are Bluetooth compatible, if you can find the brand, you can look to see if there is an app and pair with it, so you can use it as a monitor. If there’s no obvious display for it, it’s likely Bluetooth.
I was wrong. These are 6V batteries. So it is wired right as it’s in series making it 12v.
Those look like GC2 6v Golf Cart batteries. In series they will give you 12v. The block at the top is a shunt to monitor battery capacity. If you follow the small cable that has the white connector on it, it will likely lead to a display/control panel for it.
EDIT: you can tell it’s 6v because there appears to be 3 vents on the top for 3 cells. a 12v battery would have 6 cells
For those who mistook these for 12v and for future battery reference: look at the battery caps. Typically each cap is 2V. So 3 caps is 6V and 6 caps is 12V.
You don’t have much capacity for boondocking with those two 6v batteries. Figuring out the largest 12v battery you can fit in your space is a good place to start. Some single LifePO4 12v batteries can store over 500 amp/hrs so be sure to look around. 560ah seems like your best bet if it’s in your budget and can fit
These are two six volt batteries connected in series to equal 12 volts. You have what appears to be 75 total amp hours but I wouldn’t take it less than half of that so let’s say 35 total amp hours make it easy. The others are correct that the little box on the negative is a shunt. You can see if it connects anywhere to report usage or not, but it could be Bluetooth.


