Parts Unlimited Ytx20H High Performance Maintenance Free Battery Parts Unlimited has made a premium-quality, maintenance-free battery at a low price. Get up to three times longer battery life than conventional batteries. Don't worry about water loss. When filled with acid the absorbed-glass mat battery permanently seals. Features: Battery seals to prevent water loss Acid pack included Holds a charge up to three times longer than conventional batteries Dimensions: 6 13/16 L x 3 3/8 W x 6 1/8 H Amp hours: 18 310 CCA (Cold Cranking Amps) Replaces OEM 65991-82 Battery Terminal Location: Note: Product may vary from photo. We recommend charging and testing all batteries prior to using.