I have had issues in the past with the internal power only working when connected to shore power. Camping World checked all connections and said the battery was bad. I replaced the battery and everything seemed to work well. Today, after being in storage for a few months, I hooked up my new , charged battery and plugged into my truck to open the slides. Now I’m getting a “low battery” warning and the slides stop working. I don’t get it. If the RV is pulling 12w from the truck why am I getting a low battery warning? Shouldn’t it draw the power it needs Fromm there?