POWERSTAR--TWO 12180 12V 18Ah Black & Decker CMM1000 Cordless Mulching Mower 24V Battery 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