Proper battery maintenance is especially important in today's complex vehicles. Not only can an improperly working battery cause your vehicle to not start or run, it can drastically affect the drivability of your vehicle due to the amount of electronics in current vehicles. No battery is maintenance free and can fail at anytime without warning. Batteries are sensitive to temperature changes and that is why they should be tested regularly. Your battery should be checked for dirt, corrosion and loose cables - which can all cause your battery to fail. Keeping your battery in good shape will also give your electrical system a longer life. If your battery isn’t working to its full potential, your alternator will have to work overtime and other electrical components can suffer as well.