PowerStar PS5L-BS-34 Sealed Maintenance Free Powersport Battery This design dramatically improves a batteries performance in the following areas. True sealed and maintenance-free design&#44; you"ll never have to check or add electrolyte again&#44; Liquid-free AGM design&#44; will not leak or corrode on expensive paint and chrome&#44; and also eliminates AGM batteries have less internal resistance which allows them to produce more discharge current &#40;cold Better resistance to both heat and vibration&#44; a major cause of failure in conventional motorcycle