YTX30L-BS Harley Davidson Motorcycle Battery Replacement by PowerStar

2 Year Warranty | Free Shipping To US Inner 48. A Heavy Duty Separator increases life, is resistant to shock and vibration to prevent shorts. HEAVY duty plates and grids are inside the battery for durability. This design dramatically improves a battery's: A) True sealed and maintenance-free design, you'll never have to check or add electrolyte again. B) Liquid-free AGM design, will not leak or corrode on expensive paint and chrome. C) AGM batteries have less internal resistance which allows them to produce more discharge current. D) Better resistance to both heat and vibration. E) Much slower self-discharge rate, (3% vs.15% per month)