Ytx5L-Bs Scooter Battery for Yamaha Yw50A Zuma 50Cc 02-'19 YTX5L-BS sealed AGM batteries by Chrome Battery are constructed with lead calcium alloy and absorbed glass mat technology that allows for a completely maintenance-free and high-performance operation. All YTX5L-BS Chrome Battery brand AGM batteries are manufactured with the highest quality materials and rigorously tested to ensure safety, OEM compatibility, effectiveness and optimal performance.