It's no secret that the lightest car retains the advantage in virtually any motorsports competition because it accelerates quicker, apexes faster, and stops shorter. That's why automotive enthusiasts continue to run Braille Carbon Fiber Batteries. They enhance both the performance and appearance of a vehicle. By using better quality materials in these dry cell/Absorbed Glass Mat batteries, electrical operation increases, and genuine carbon fiber casings show you won't settle for less than the best.Note: AGM (Absorbed Glass Mat) batteries are fully charged, ready to install, and compatible with a vehicle's charging system. If additional charging is ever needed, an AGM-compatible charger will be required.