No, auto batteries are DC not AC.
Have an AC shop evacuate the system. Some shops will recharge the system after repairs and not charge for refrigerant, they just give you yours back.
You can buy a charge kit from your local auto parts store and follow directions but if it needs a charge it must have a leak. Have the leak repaired first. This is best done by a garage that does AC work.
if both readings are about the same 100's most likely tou have a bad ac compressor
Buiy a kit at Wal-Mart or auto parts, comes with instructions
Buy a kit at Wal-Mart or auto parts - comes with instructions
Buy a kit at Wal-Mart or auto parts store--comes with instructions
system may need to be evacuated prior to charging
You buy r12 at auto parts store then plug the can into a valve on your ac line. instructions will be on can.
You will have to flush the hoses with a solvent and compressed air, install low and high side conversion fittings, evacuate the system with a vacuum pump, and then recharge the system with oil charge and R134.
Will have to be converted to 134 buy a conversion kit at Wal-Mart or auto parts comes with instructions
I got an AC Delco battery in October 2011 for 75$ from an Asian auto service(usually cheaper than the American service). The installation charge was 10$.