Good battery maintenance will prolong the life of your car battery. Check the battery's water level every 2 to 3 months, only if it's a non-maintenance-free wet-cell battery. Clean the battery terminals with a wire brush every 6 to 8 months. Coat the battery with grease made for high temperatures.
The average car battery life can be anywhere from three to five years, but the exact time any given battery needs to be changed depends on a number of factors. D.C.Autocare can provide you with a print out of the condition of your battery and advise if and when a replacement battery is required. Old car batteries can present a number of safety and reliability issues.