A vehicle's battery should last you a number of trouble-free years, but if not cared for properly, their life can be greatly shortened. Proper car of your battery should include keeping it and its connection clean (1 tablespoon baking soda and water) and well insulated. You should also resist the temptation to run accessories (stereo, GPS, etc.) for extended periods without the engine running. If applicable, check your battery's water levels regularly, and if you don't drive your vehicle for extended periods, keep your battery healthy with the use of a solar battery charger.