12 volt battery charge levels

[Road Runner]

At what voltage is a 12 volt battery flat and full please?

 

[Gonewiththewind]

Some one will probably come on and criticise, but my ubderstanding is as follows;
12.7 v or over is fully charged
12 v or less is Flat.

test is best done after the battery has stood for a while as tired batteries will lose slowly without use.

 

[Road Runner]

Thank you

 

[scotjimland]

Some one will probably come on and criticise, but my ubderstanding is as follows;
12.7 v or over is fully charged
12 v or less is Flat.

More or less correct..

Link Removed

 

[Road Runner]

Excellent Jim great help

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