PowerStar-22AH High Rate SLA Battery replaces 51814 6fm17 6-dzm-20 6-fm-18 lcx1220p - 2PK PowerStar Brand - 2 YEAR WARRANTY Length 7.13in,Width: 3.01in,Height: 6.57in 100% OEM compatible - Advanced AGM Technology Used in UPS backup systems, spotlights, flashlights, exit lighting & other equipment Absorbent Glass Mat (AGM) technology for superior performance