change a car battery

Yes, you can change a car battery without summoning a mechanic or a minor deity—just a bit of care and common sense.

Park safely, ignition off, pop the bonnet, wear eye protection, and if your car’s fussy about memory, use a saver or note radio codes and settings.

Note the orientation, then disconnect negative (-) first, positive (+) second; remove the hold-down, lift the battery out, and clean the terminals and tray.

Drop in a replacement with the correct size, type, and CCA, then connect positive first and negative last, tighten clamps, and a dab of dielectric grease won’t hurt.

Start the car, reset the clock/windows, and dispose of the old battery at a recycler—if it cranks slowly or throws warnings, get the charging system tested.