Hello all, our house battery is installed underneath the van on the driver's side. A little less than a year ago I got a new 4D battery from SMB and they replaced the bracket/frame that holds the battery.
On Wednesday morning driving home from surfing we heard a loud bang followed by an even louder scraping noise. I pulled over as quickly/safely as possible to find that the frame welds had failed and the battery was hanging on by a "thread".
We were incredibly lucky/fortunate that it didn't completely come apart from the van and cause an accident (or worse). I'm also lucky this happened on a surface street and not a busy highway.
We got the battery disconnected. I've contacted SMB and they are going to send me replacement parts to get it remounted. It does not appear like there is any damage to the battery, terminals or wiring.
However, I've noticed something strange, at least to me. We have a BlueSky controller and a 130 W solar panel. The controller still shows the same voltage as when the house battery was connected. I'm assuming it is reading the van batteries. Furthermore, all the electronics in the van (lights, water pump, etc.) still work. Again it must be draining from the van batteries. Is this normal and an intended function? I would've thought nothing should've worked? When the house battery is reconnected how can I tell if the electronics are using the house battery vs. the van batteries? How can I see the voltage of the house battery?
I have a feeling there is a problem with the wiring or the separator. Any thoughts/guesses/advice? Thanks!