Big Toys MotoTec 24v Solar Electric Go Kart Motor: 350 Watt DC Electric Motor.Top Speed: 15 MPH.Battery: Two 12v 16AH Lead Acid (24V total). Solar Panel: Integrated 4W Monocrystal Silicon (13x9 inch panel).Battery Charger: Included. Ride Time: 2 Hours (compared to 45min).Frame: Steel.Green: Zero Emissions. Rims: Aluminum 2 piece.Tires: 9 inch Pneumatic (9x3.5-4).Brakes: Rear disc with hand lever. Recommended Age: 12+.Max Rider Weight: 150 lbs.Product Dimensions: 48x33x21 inches.