Specifications Motor DC 350W Dimension 50"x24"x25" Battery 24V 16Ah (2X12V 16Ah), included Panel Size 13"x9" Solar Panel 2x5W Monocrystal silicon Solar Panel Top speed 15mph Charging time 12hrs by DC24V(solar) charging Tire Dia 9" 4--6hrs by AC120V charging Max. Load 220lbs Distance ~1.5hr Ride time + solar recharge Useage 12 and Up Comparisons Standard electric Go Karts SolarWing 350 45 min to 1hour ride time 90 min (double) with solar charging 120lbs rider weight limit 200lbs rider weight limit 10 mph top speed 15 mph top speed DC electric charging DC & Solar charging Solid plastic tires 6" diameter Pneumatic rubber tires 9" diameter