This battery comes already charged, sealed, maintenance free, and ready to install. AGM and GEL batteries are lead-acid and of the same battery chemistry.YB9A-A 12V 9AH 130 CCA Replacement Battery compatible with Yuasa YUAM229AY YB9A-A - 8PK Premium quality absorbed glass mat technology AGM is ideal for ATVs, Motorcycles, Personal Watercraft, Jet Ski's, Snowmobiles and more..