Trying to figure out if there is still some life left in my batteries. Not sure how long they were in use. I am complete newbie in this topic and need some expert advice, before I decide to buy new batteries.
I have 2 VICTRON 10-110 AGM batteries for house bank on a boat I just bought. They are charged with QUICK SBC 700 NRG 60A charger that has AGM charging profile. When connected to shore power it shows 13.4 V.
What voltage should I expect to see on fully charged VICTRON 12-110 AGM battery after it is finished charging and disconnected from shore power?
Few minutes after it is disconnected it shows 12.8V. Is that correct? I think I read somewhere that they should show 13.4 when fully charged. They do not seem to last too long (max 2 days when we really try to use only what is needed - although theses days there are always phones/tablets/bluetooth speakers charging)