Okay in this illustration everything appears to be working fine, and so long as we never move the switch to #2, it will be.. The Lifeline AGM battery is at its target voltage of 14.4V and is getting charged via the 1/2/BOTH switch directing charge current to the HOUSE bank denoted by the orange switch line to position #1.


In this scenario the HOUSE comes up to proper voltage and everything works. HOUSE at 14.4V START at resting open circuit voltage of 12.6V or so.


NOTE: This diagram assumes no Echo Charger, Duo Charger or Combiner to charge bank #2..