Yongkang Xinex Technology Co.,Ltd

extra external battery pack for ninebot es1 es2 are also available.
Specifications

Weight: ~28 lbs (12.5 kg)
Size (Unfolded): 40" x 17" x 45" (102 cm × 43 cm × 113 cm)
Size (Folded): 45" x 17" x 16" (113 cm x 43 cm x 40 cm)
Max Speed: 15.5 mph (25 km/h)
Max Range*: 15.5 miles (25 km)
Max Climbing Angle 10°
Applicable Terrain Asphalt/flat pavement; obstacles < 0.4 in (1 cm); gaps < 1.2 in (3 cm)
Operating Temp 14–104°F (-10–40°C)
Storage Temp -4–122°F (-20–50°C)
IP Rating IP54 Water Resistant

Motors
Nominal Power 300 W
Max Power 700 W

Battery
Max Charge Time 3.5 Hours
Nominal Voltage 36 VDC
Max Charging Voltage 42 VDC
Charging Temperature 32–104°F (0-40°C)
Nominal Capacity 187Wh