If you’re like most people, you probably don’t know how to recharge a car’s ac without using a vacuum pump. Here’s how:

  1. Open the hood of your car and remove the battery cover.
  2. Disconnect the negative battery cable from the positive battery cable.
  3. Remove the two screws that hold the battery cover in place on your car.
  4. Lift off the battery cover and discard it.
  5. Place your new, charged battery in place on top of the old one from before.
  6. Close the hood of your car and turn it on to charge your new battery until it says “Ready.”