Battery SOC Low - Voltage Normal
Hi All. I'm new here so go easy on me. I've Googled for hours but can't find any solid answers. My setup is in my signature. So here's my issue.... Whether plugged into shore power, running my ...
Forum Discussion
5erToyHauler wrote:
My display was showing 94% SOC @ 13.0V. When I turned the main power disconnect to "On" It went down to 78% SOC @ 13.0V.
I haven't read the rest of the answers yet but there really is only ONE explanation for your dilema: The monitor that is showing your SOC is defective.
The no-load resting voltage is directly related to SOC in a healthy battery.
It is impossible to have 13 V indicating 94% and then later having 13V indicating 78%.
Actually both figures are off a bit but the first one is close.
The second one is WAY off.
Either your electronics has gone bad or the connections just need to be cleaned up and re-tightened to get a better reading.
I monitor my house batteries with a simple voltmeter that plugs into one of the 12 V outlets and don't worry about it until it starts staying a bit below 12 with a nominal load.
I have a SOC table but don't know right off hand how to post it here.
