Car batteries, though rechargeable, can become costly if not properly maintained. Some tips to get the most out of a car battery include parking in an insulated garage during cold months to prevent temperature loss, cleaning the battery regularly to remove gunk that can weaken the charge, ensuring all connections are secure, and recharging as needed through a portable jump starter or inexpensive solar charger with a monitor to prevent overcharging. Following these simple maintenance tips can help extend the life of a car battery for years.