Ytx30L-Bs Motorcycle Battery for Harley-Davidson Flh, Flt (Touring) Year (11-16) YTX30L-BS sealed AGM batteries by Zipp Battery are constructed with lead calcium alloy and absorbed glass mat technology that allows for a completely maintenance-free and high-performance operation. All YTX30L-BS Zipp Battery brand AGM batteries are manufactured with the highest quality materials and rigorously tested to ensure safety, OEM compatibility, effectiveness and optimal performance.