Graham Meagher (18) of Kilcaroon, Clogheen, Co Tipperary, was brought before a special sitting of Cashel district court on Saturday evening.
He is accused of assault causing harm on PJ Kelly at Kilcaroon on Thursday.
Mr Kelly suffered a serious head injury during an incident at his home and was taken by ambulance to South Tipperary General Hospital before being transferred to Cork University Hospital later on Thursday.
He remains in a critical condition in hospital.
Judge Terence Finn heard in court on Saturday that Graham Meagher made no reply when he was charged with the offence.
Inspector Paul O’Driscoll applied for a remand in custody and there was no application for bail by the accused’s solicitor Eamon Hayes.
Judge Finn remanded the accused in custody, to appear before Cashel district court this Wednesday.
