When using furnace and fridge my 2 AGM 75 Ah battery voltage declined slowly from 13.6 V to 10.63 V (Zamp controller showed one idiot light at low voltage) but my BMV indicated a SOC that started at 100% and dropped to a low of 90% SOC....when I turned off the furnace the voltage slowly increased to 12.6 V and SOC went up to 96%...battery temp 26 to 32F...no solar, no sun during this.
Any ideas why the disparity between voltage and SOC?
Since then, battery temp 5F, but with sun/solar and no appliances on...Zamp reads "full" (4 idiot lights) and BMV SOC at 100%....BMV has been scynd with batteries...
I am in Kellogg Id and headed to Whitefish where current temps are well below zero...warming some mid-week...my options are to motel it, use my Honda 2200i or go for broke and see if AGMs will entirely crop out.
Any and all ideas welcomed!
Thanks....Phil "Out In The Cold"
Any ideas why the disparity between voltage and SOC?
Since then, battery temp 5F, but with sun/solar and no appliances on...Zamp reads "full" (4 idiot lights) and BMV SOC at 100%....BMV has been scynd with batteries...
I am in Kellogg Id and headed to Whitefish where current temps are well below zero...warming some mid-week...my options are to motel it, use my Honda 2200i or go for broke and see if AGMs will entirely crop out.
Any and all ideas welcomed!
Thanks....Phil "Out In The Cold"