So I woke up this morning to an alarm from Victron telling me that they'd lost the connection to our trailer. A quick check showed that the batteries had been run down to zero.
This is the second time that Oliver has allowed them to run down while in service, in two visits. This time there wasn't much turned on other than the various monitors, which draw about an amp total. That would have lasted 12-14 days normally, but Oliver worked on it a few times during the last week and had some things plugged in, so we lost a few days' time. It also looks like someone may have turned the fridge on, or left something plugged in that added another amp to the draw for about three days.
Hopefully no harm done to the lithiums but I really wonder how often they allow the same thing to happen to other customers' trailers with lead acid batteries. I mean, I'm pretty sure that we're the first customers to have remote monitoring, so if Oliver has allowed other customers' batteries to fully discharge, how would we know?
Anyway, I was willing to give them the benefit of the doubt the first time, but twice in a row? Jeez. I've emailed Jason and copied Scott, asking them to put something in place to keep this from happening again. But frankly, given my experience, if any of you have left your trailer at Oliver for an extended period, I'd just assume that they allowed your batteries to fully deplete while there.