Hello everyone is there any type of device I can buy in order to save my battery from dying?

Hello does anyone know what these are called and how can I find them? I tried looking up catalytic converter bracket but it doesn’t seem to recognize it.

Does anyone know where I can find power steering delete line for a 2g GS model?

Hey guys I have a 1999 Eclipse GS 5speed. I have replaced the water pump, alternator, and reset the timing belt. I even replaced the radiator fan and the coolant housing along with the temperature switches.I really don’t know what else to do please if any one can help let me know