12V 12AH Lithium Ion Battery is a replacement for outdated lead acid or AGM batteries. The 12AH lithium ion battery includes a built-in battery management system. The built-in protection also includes short circuit cut-off. It is a high performing deep cycle battery with a dense LiFePo4 battery chemistry. The most dependable battery in the world. The battery is a quick drop-in replacement for any application using lithium technology.