Discover LITHIUM BLUE LiFePO4 Premium Series batteries offer Battery Management System controlled safety, long life, lightning-fast charging performance and real-time Bluetooth access to battery State of Charge, voltage, current, temperature status. LITHIUM BLUE batteries reflect Discover’s Design for Excellence philosophy, incorporating suitcase-style carrying handles, terminal protection and field serviceable fuses. LITHIUM BLUE batteries are safe, easy to install and parallel for more capacity.