Endurance and lab tested to provide long, reliable performance in a heavy-duty o. e. m. -style case, the Shocker Gel Batteries from Twin Power are the next generation of batteries. Featuring nano-gel technology thatÆs factory-activated and sealed, the Shocker Gel Batteries go beyond AGM technology. Easily mounts in any position, without the need for terminal adaptors or spacers. Flush mount threaded posts with dual connection points. Superior vibration and impact resistance. Superior deep-cycle life. Widest operating temperature range with best cold start capability. Highest resistance to sulfation.