Hi I have a b18c6 engine in my car, doesnt have a a radio, just a toad alarm. I have a Odyssey pc680 battery currently and some days it struggles to crank it and others turns it straight away. The battery is in the back with 0 gauge cable going from the back to the fuse box, to the starter also, from the battery neg to the car chassis, have cleaned all the grounds too. Is it the battery at fault or would it be the length of the cable? starter motor is good. Did think about getting a new battery but wouldn't know which one to get for the back of the car. I wouldnt get an Odyssey one again I don't think.