features: 1. light weight --- aluminum frame. 2. stable z-shape structure, easy to fold&unfold and store. 3. handle height adjustable. 4. new rubber hot wheels. slightly press to quick release. 5. safety starting, run only operating on speed controller. 6. unqiue speed memory function. specification: full dimensions (mm): 1,100 x 600 x 930 folded dimensions (mm): 900 x 580 x 300 carton size:83*58*26 cm weight (with battery): 17.5 kgs max speed: 8km/h max load capacity: 30kg climbing capability: 20 degrees average running distance per charge: 20km motor power: 180 w /12v battery: 12v, (24ah ) battery charging time: 5-8h charger (use times) : >= 300 times qty./20"container : 240 pcs qty./40"container: 590 pcs