CTEK Battery Chargers and Power Supply. If you are looking for a comprehensive charging system for your Corvette than look no further than CTEK. Known as "The World's Smartest Chargers" these little units pack a punch and are endorsed by the some of the most prestigious Automakers on the Planet. Regular use of a quality charger can extend the life of your battery by 2 to 3 times its normal lifespan. CTEK's automatic and responsive Corvette battery charging systems adapt to your exact needs, insuring a perfect experience every time.