Features. PowerStar valve regulated sealed lead acid batteries are easy to handle rugged and economical.. PowerStar makes the highest quality Sealed lead acid battery only at Bigtime battery.. PowerStar 12 Volt 18Ah Sealed lead acid battery for YTX20L-BS High Performance.. Maintenance Free.. Sealed AGM Motorcycle Battery.. Fits for MBTX20UHD Replaces Harley 65989-97C. Dimension - 6.89 x 6.1 x 3.43 in.. Item weight - 15 lbs.