Honestly it may give a few more years of service. Toyotas are pretty easy on batteries especially the older ones. Not many high draw items and the engines are super easy to spin over. In HS my friend had a 1996 Camry 4 cylinder. He was stuck at home with a dead battery. He had the idea of he would pop in a riding mower battery his dad had laying around in the garage. I told him he was crazy and it wouldn't work but it actually turned over the 4 cylinder with little issue. He used that mower battery for 2 days until he got paid LoL! I owed him dinner on that one.