You can find your car battery location in your owners handbook. Your car battery is usually situated under the bonnet of your car. However, there are some vehicle manufacturers that put the battery under the rear passenger seat or in the boot of the car; generally these positions are more common on large executive vehicle models. Vehicles like Mercedes, Porsche, Rolls Royce and Mitsubishi can sometimes have two batteries, generally where the engine size is large. Car batteries contain sulphuric acid (which is highly corrosive and must not come in contact with your skin or eyes), and therefore you must be very careful when handling them.

Most of currently fitted car batteries are maintenance free and carry a performance indicator, which will tell you in what condition your battery is. You must make sure that the terminal connections are tight and free of debris. Make sure the terminal connections are kept clean to avoid a build-up or dirt and grease and coat the terminal connectors with petroleum jelly to prevent corrosion. Over tightening can result in damage to the battery casing or lead posts and ultimately, premature battery failure. Beware of crossing or connecting the positive and negative terminals as this can result in an electric shock, irreversible damage to the battery cells and, in extreme cases, an explosion.