I just installed a BVM 712. I set the battery capacity and everything appears to be working but the time to go does not change. i ran every light and the fridge for over 12 hours last night and this morning the time to go is at 240 H which is the same as it was last night prior to running these things. The battery charge percentage came down from 100% to 93% so it seems to me that the time to go should have changed as well. What am I missing?