These are the known mechanical and performance specifications for your 2012 Giantco e-Dolphin II.
Basic Specs

Engine
Displacement
TypeDC Brushless hub motor
DetailsElectric
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
CoolingAir
Performance
Horespower
Torque16.00 Nm (1.6 kgf-m or 11.8 ft.lbs)
Top Speed
Chassis
Frame Type
Rake
Trail
Front SuspensionOil damped telescopic fork
Front Travel
Rear SuspensionOil damped coil spring
Rear Travel
Seat
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,050 mm (41.3 inches)
Total Length1,980 mm (78.0 inches)
Total Width700 mm (27.6 inches)
Ground Clearance
Wheelbase1,440 mm (56.7 inches)
Dry Weight71.0 kg (156.5 pounds)
Wet Weight101.0 kg (222.7 pounds)
Wheels & Brakes
Front Tire/Tyre
Rear Tire/Tyre
Front BrakesSingle disc
Front Brake Diameter180 mm (7.1 inches)
Rear BrakesSingle disc
Rear Brake Diameter180 mm (7.1 inches)
Wheels
Comments
Range 20 km. 3 x 48V 10Ah LiFePO4 Plug and Run battery. 1.5 h charging time. 5 years or 50,000 km battery life. Made in Hong Kong.