This battery comes already charged, sealed, maintenance free and ready to install.
Polarity: positive on left, negative on right, listing is for the battery and screws only, no wire harness or mounting accessories included. This YTX7A-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. Premium quality Absorbed Glass Mat technology (AGM) is ideal for ATVs, Motorcycles, Personal Watercraft, Jet Ski's, Snowmobiles and more.