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piotr-jakubowski avatar image
piotr-jakubowski asked

What voltage should I expect on fully charged VICTRON 12-110 AGM battery.

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)

voltage
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2 Answers
gro avatar image
gro answered ·

According to this info

https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf

Storage voltage is 13.2-13.5V. (That probably requires a trickle charge to keep at that voltage)

After an AGM battery has been charged and rested for a couple of hours (8-24hrs) the open circuit voltage should be 12.85 V for a 100% SOC.


have a look at this, he does not use a specific AGM algorithm as per purpose built charges but I think you will get some valuable info which will probably have you buying LiFePO4 batteries

https://m.youtube.com/watch?v=ng40az4Hj2A


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ref-niu avatar image
ref-niu answered ·

A fully charged 12V AGM battery should have a voltage of around 12.8 to 13.0 volts. This is typical for a fully charged 12-volt AGM battery.Look at this, you will get some dry goods information. https://www.oremabattery.com/news/what-voltage-should-a-12v-agm-battery-be-232343.html

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