Heavy-Duty Power-Perform Plates withstands temperature extremes while maximizing power and energy storage capacity; Enhanced Crystallization of Power-Perform plates provides more power-per-pound; Flush Cover Design enhances overall battery performance, maintenance, safety, and convenience; Delivers high cranking power for sure starts; Dual terminals for either top or side post applications; Handles included for convenient installation and transportation; Ultra-Pure Demineralized Electrolyte precision filled to exacting levels for extended life; Short-Protector Separators have thicker backweb material that prevents plate-to-plate shorts; Fortified Posts, Straps, And Welds resist vibration damage, maximize current transfer.