Voltage reading on leisure battery?

[kit]

I have just fitted one of those usb and cigarette lighter socket things and it has a digital volt reading, it is reading 12.7 volts on the battery I use as my leisure battery although in fact it is just a out of a mates car he was scraping so not a proper leisure battery, does that sound right and should I have added a few more comers in this? Thanks.

[lodgey62]

Pretty much spot on,might settle after an hour,if that reading is straight after running,but it's spot on

[kit]

Thanks, I need to wire up the split charger next but for now I am using a solar panel to see how that goes.

[Mocki]

12.6v is a fully charged battery at rest.