This YTX14-BS is a Sealed Lead-Acid (SLA) Absorbed Glass Mat (AGM) rechargeable battery. AGM and GEL batteries are lead-acid and of the same battery chemistry. This battery comes already charged, sealed, maintenance free and ready to install. Premium quality Absorbed Glass Mat technology (AGM) is ideal for ATVs, Motorcycles, Personal Watercraft, Jet Ski's, Snowmobiles and more.