My AGM battery is sitting at 12.7 - 12.75. Is this considered fully charged?
rockylizard said
09:50 PM Oct 30, 2018
Gday...
Before we are bombarded with thousands of questions and detailed technical information, praps this might help -
Cheers - John
Tony Bev said
11:16 PM Oct 30, 2018
If you are seeing 12.7 to 12.75 volts, a few hours after you have stopped charging, then the AGM battery is OK
I have 2 x Bosch 120 AH AGM batteries
I see over 13 volts, about one hour after the sun has gone down, and 12.7 volts, before the dawn arrives, and I have a 12 volt compressor fridge
Ger08 said
11:18 PM Oct 30, 2018
Thanks guys
aussie_paul said
11:54 AM Oct 31, 2018
rockylizard wrote:
Gday...
Before we are bombarded with thousands of questions and detailed technical information, praps this might help -
The open circuit resting voltage of a battery will vary according to the electrolyte temperature. I prefer to use the charts in Bill Jarden's website. See this page - HOW DO I TEST A BATTERY?
rockylizard said
12:25 PM Oct 31, 2018
Gday...
Thanks for all that Peter - excellent, fully documented information covering almost every aspect of a battery.
From a fairly quick read, it seems that, dependent on temperature, a fully charged AGM will be 'about' 12.6V to 12.8V.
As a complete moron when it comes to this sh!t, and all I can do is look at the gauges provided with the solar system, if it says 13.4V on float, and when the big bright light in the sky goes to sleep, and charging has finished, and at 9pm at night, the gauge says 12.7V, then I can tuck myself up in bed, safe in the realisation that the battery, for that moment at least, is quite probably fully charged.
I think that is all the OP asked ... and all I would ever need to know.
Why does it ALWAYS need to get so damned complicated when a question is asked.
It's like asking what time it is and getting a 48 page manual on how to design and build a clock.
Cheers - John
The Travelling Dillberries said
02:24 PM Oct 31, 2018
They live in the land of explanation John, there are no simple answers. Gotta Luv it!!
Mike Harding said
06:36 PM Oct 31, 2018
It's a fair point - it must be hard if you find it difficult to understand anything technical.
Jaahn said
08:19 PM Oct 31, 2018
Well at least no one has started putting videos on yet
Jaahn
Ger08 said
09:38 PM Oct 31, 2018
Thanks again for all the responses, it seems like our battery is fine.
My AGM battery is sitting at 12.7 - 12.75. Is this considered fully charged?
Gday...
Before we are bombarded with thousands of questions and detailed technical information, praps this might help -
Cheers - John
I have 2 x Bosch 120 AH AGM batteries
I see over 13 volts, about one hour after the sun has gone down, and 12.7 volts, before the dawn arrives, and I have a 12 volt compressor fridge
I had this one saved.
Aussie Paul.
The open circuit resting voltage of a battery will vary according to the electrolyte temperature. I prefer to use the charts in Bill Jarden's website. See this page - HOW DO I TEST A BATTERY?
Gday...
Thanks for all that Peter - excellent, fully documented information covering almost every aspect of a battery.
From a fairly quick read, it seems that, dependent on temperature, a fully charged AGM will be 'about' 12.6V to 12.8V.
As a complete moron when it comes to this sh!t, and all I can do is look at the gauges provided with the solar system, if it says 13.4V on float, and when the big bright light in the sky goes to sleep, and charging has finished, and at 9pm at night, the gauge says 12.7V, then I can tuck myself up in bed, safe in the realisation that the battery, for that moment at least, is quite probably fully charged.
I think that is all the OP asked ... and all I would ever need to know.
Why does it ALWAYS need to get so damned complicated when a question is asked.
It's like asking what time it is and getting a 48 page manual on how to design and build a clock.
Cheers - John
They live in the land of explanation John, there are no simple answers. Gotta Luv it!!
It's a fair point - it must be hard if you find it difficult to understand anything technical.
Well at least no one has started putting videos on yet
Jaahn