Our Autolite Sta-Ful batteries are authentic reproductions of the originals that use the original case, and not just cover molds. These batteries are maintenance free, utilizing the latest AGM (Absorbent Glass Mat) technology so they never require adding acid or water filling. The electrolyte is trapped in the separators so the battery can't leak, even if the case is broken. They come fully charged and ready for installation. These are not generic batteries inside a case, they are full true AGM batteries. Made in the USA. NOTE: This requires a special Group 27 Battery Tray that was optional on Big Block and Boss cars. Group 27 (Crank amps @ 32 degrees F = 960; crank amps @ 0 degrees F = 775; Reserve capacity @ 25 Amps = 135; length = 12)
