Tip 3: Make sure the car battery is secure and has good battery cables The battery has to be secured at all times. If a battery is jostling around it will be impaired and could short circuit. This will ruin the battery – and even cause damage to your car while creating a safety risk. The same could happen if you have bad battery cables (or they’re not connected properly). So check your cables and make sure they have a secure connection as well. Tip 4: Insulate your car battery from extreme changes in temperature Protecting your car battery from large changes in temperature will help maximize the battery’s lifespan. To do this you can use a car battery insulation kit. Newer model cars already have these kits installed typically. But if your car doesn’t have one, you can easily install one yourself. View our Free Presentation to learn how to bring old batteries back to life again