up to full charge) I get as close to 1000 amps as I can. Yeah I know car specs say 560 amps (but that is the minimum) I picked up a classic car out of an orchard(and it sat for 5 years) Once I got damages fixed from vandals, and changed the oil; then poured a 1/4 cup of gas down the carburator, she fired right up and idled like it had just been shut off recently. 1955 Chev with early V8 engine. So battery, is the first thing to age out. In the stores the batteries on the shelves are generally without acid in them. That is added after you purchase the battery and it is given a quick charge that gives it about 75% charge. Once in the car and you have been driving for a bit it moves up to 100% as the alternator is a slower deep charge. Other Answers (3) There is nothing worse for a car then for it to sit idle and rot away. Cars were built to drive. When they don't drive, none of the fluids circulate. You get rust internally, parts start to corrode, plastic bits dry up and crack. It's really not pretty. You would have to replace all the belts and hoses, spark plugs, all the fluids, brakes, etc. After that it will probably work fine. It probably need a new battery and the air in the tires is low. In fact the tires might be bad by now