Thanks @Bob142 for the quick reply. All negatives are connected to the P and Yes I hooked the battery charger up directly to the battery terminals.
So how do I correct this? Discharge the battery again and recharge hooking up to the P post?
I am having problems with my system in that it can not operate my DC Snomaster refrig more than a few hours after the sun goes down. I suspect it lies with the battery (2 1/2 years old but have always had issues) so I bought and installed an AiLi battery monitor. Set up was straight forward...