Camper: 2021 5.0, 2 solar panels, 2 lithium batteries, EMS, Inverter, a DC only compressor fridge.
Problem: Last year, we winterized and stored the camper in covered in-door but not heated commercial parking. We had engaged the battery disconnect and confirmed that it had turned off the power to the lights and refrigerator, etc.
On Monday, we pick up the camper and find the batteries dead. We do not know if they were completely discharged or BMS simply stopped them from providing external charge. The lighting in the camper and, very importantly, the power jacks to lift the camper for hook up, etc. had no power.
Our storage facility is, thankfully, full service. They provided boost to the battery and also used a forklift to raise the coupler. That allowed us to add blocks underneath the jack legs and let us hitch up. About an hour of connected driving and a morning later, the batteries show a full charge yesterday.
This is the second time our batteries were fully discharged (not sure that's what happens or whether the BMS stops it from providing external charge). The previous time, I had created a thread on the forum and received much appreciated and generous help -
https://www.escapeforum.org/forums/f...elp-21554.html
In fact, we were following up on the advice in that thread in the excursion where we ran into this issue. Yesterday, we had a tech install the following:
- Victron battery monitor - https://www.amazon.com/gp/product/B075RTSTKS
- Solar disconnect - https://www.amazon.com/gp/product/B0746DLP7S
The battery discharge situation happened the day earlier. Since this seems to (too) happen often - we just bought NOCO Boost HD GB70 2000 Amp 12-Volt UltraSafe Lithium Jump Starter
https://www.amazon.com/gp/product/B016UG6PWE to our kit.
Advice Sought: The camper is now back in the storage but we are left wondering as to the cause and the course of action. Whether it is even a good idea to use the battery disconnect. Without it, the storage place can connect our camper to power a couple of days prior to pickup.
Please note that the camper is back in storage. We are planning a camping trip in mid April. So, can follow directions at the time.
We will return to our tech a bit later on a different matter (Trailer TPMS and camera installation) in May or later. We can also ask his help.
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