Battery Bank Shop in Northern Utah?

[Ironhead]

Im looking for a shop in Northern Utah, Southern Idaho that actually knows the ins and outs to properly add another battery to my battery bank and also add a gauge to let me know how drained the system is. Anyone have any advise?

 

[Ironhead]

advice

 

[Stumpalump]

Mount a battery and use battery cables to go from the new battery to the rest. A two wire volt meter will let you know the condition. It's very simple but look here for ideas: http://www.expeditionportal.com/forum/forums/48-Power-Systems-12v-Solar-Gen