Voltage

[KingDan]

I'm not sure where to post this, please forgive. I am on the road right now. I was wondering if this was what the truck should be charging at. Had to jump it to get her going this afternoon haven't shut it off yet (bout an hour). I 103k on the clock, second battery. I think it's time for a new one.

 

[fourwd1]

You need at least 13.8V to properly charge the battery, and assuming your gauge is accurate it says a little under 15, so you should be OK.
But I'd get a real voltmeter and check the battery voltage engine off/engine running.
It should be 12.6V off.