Cobra's rm51sp80v is a cordless roller mower with self propelled drive, perfect for creating a traditional striped finish to your lawn. Powered by two 5ah samsung 40v batteries and fast chargers, the 51cm 20 mower is suitable for maintaining medium sized lawns. The effortless self propelled drive and the 80v of power from the twin 40v batteries will navigate uneven ground and mow for up to 45 minutes from full charge. The cordless walk behind roller mower features a steel roller, 60 litre grass collector and 7 cutting heights ranging from 17 75mm.supplied with 2 x 5ah batteries and 2 x fast chargers.5ah charge time with fast chargers 30 minutesspecificationpower 2 x 40v samsung 5ah lithiummotor brushlessdrive self propelledcutting width 51cm 20 grass bag capacity 60 litre with bag full indicatorsteel rear rollercutting height 17 75mm, 7 heights of cuthandle foldingweight net 35kgwarranty 2 year domestic