Just to be sure, you could remove the battery, attempt to charge it independently with a regular charger, then check with a hydrometer. If hydrometer shows all cells good, re-install and try it. If still no good, then replace as mentioned above.
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.