12V Meter Curiosity......

Thank you for the responses.

Let me recap.

2 - 6V batteries bought NEW in April.

Today I plugged into shore power.

Trailer is putting out 13.25V

Unplug shore power and batteries are at 12.8.

Now we wait until I get up for work in 7 hours and check again. :)

Either your converter is not charging the battery properly, or your battery is failing and not holding a full charge, or the voltmeter installed in your RV is not accurate.

When charging a depleted battery, your voltage at the battery should be at least 13.6v. After charging for several days, turn the converter off and wait several hours to check the charge at the battery with a voltmeter. It should be at least 12.6v if your battery and charger are working properly.

I have one of these ( although the one I have is the older version ) mounted in my trailer. I like that at a glance I can see what is happening on the 12V side of the trailer.

http://www.voltminder.com/

According to your volt meter 12.13v is approx 55 percent SOC. I would say there is definitely something wrong with that battery or the meter.

Duplicate.

That percentage meter is something I installed just as a quick reference.

I am going to check the voltages right at the batteries, tomorrow and then plug it in to shore power and see what's up.

They are brand new Crown 6V.

I have never put a lot of faith in charge percentages for me it's either charged or not.

I dunno', I don't trust those meters they put in the TT's. There have been a few folks that found them inaccurate.
If you really want to know what condition your battery is in, take it to an auto parts house for a load test. While you're there, have them dip it with their hydrometer. If/when you want to get real technical with battery maintenance, buy a good hydrometer. Francis Freas makes lab grade hydrometers or, maybe in Ontario, look for one off Ebay to avoid cross-border shipping.

Did you ever read The 12 Volt Side of Life?

I suspect it is really less than 60% Charge state based on your 12.14VDC reading... I would only use your installed percent charge meter for just a good feeling your battery is connected haha...

I always put my Dc VOLTMETER on the battery terminals to check if it is being charged. Battery should read 12.6-7VDC when fully charged and when you hit with shore power the charge should jump up to 13.6 or whatever mode the smart mode charging is doing.

If you don't see this jump in DC Voltage at the battery terminals then it isn't happening... If it is seeing this increase but drops down to 12.14VDC at the battery terminals when you remove the shore power than your battery is not holding its charge...

A good battery will charge from its 50% charge state (around 12.0VDC) at the battery terminals to its 90% charge state (around 12.6VDC) at the battery terminal in a three hour battery charge time when 14.4VDC is applied with a current capacity of 17-20AMP DC Current. It will take approximately 12 hours charge time to reach its 100% charge state when 14.4VDC has been applied to the battery terminal...

So says Progressive Dynamics

Roy Ken