My battery is on it's way out, but I cant afford a new one right now. I have a brand new one from the ford escort I used to have. It is a bigger battery, but If I find a way to make it fit, would it cause me any problems to use it for a few months?

 

You can use any 12 volt battery. There will be no problems other than physically fitting in the space. The Civic battery is really small compared to others.

 

yeah, their all the same voltage, just wire it up and try to securly mount it somewhere it isnt going to bounce around.