General Specifications
1. Manufacture and Models: The document details various models including CQD12H, CQD12H-C1, CQD14H, CQD14H-C1, CQD16H, CQD16H-C1, CQD20H, and CQD20H-C1.
2. Power Type: All models are powered by a battery.
3. Rated Capacity: Ranges from 2600 lbs to 4000 lbs depending on the model.
4. Load Center: Consistently at 24 inches across models.

Dimensions
1. Lift Height: Uniform at 118 inches for all models.
2. Free Lift Height: 13.4 inches.
3. Fork Size: 36.2 x 3.94 x 1.38 inches.
4. Overall Dimensions: Length to face of fork varies slightly between models, with a consistent overall width of 48.8 inches.

Performance
1. Speed: Travel speed is 6.4 miles per hour.
2. Lifting Speed: Varies slightly with load, from 8.3 to 10.2 inches per second.
3. Max Gradeability: 10% for all models.
4. Self Weight: Ranges from 6270 lbs to 7150 lbs.

Wheels and Tires
1. Front Wheel Dimensions: 11.2 x 3.94 inches for most models, with larger dimensions for higher capacity models.
2. Rear Wheel Dimensions: Consistent at 13.5 x 4.49 inches.

Drive Units and Control
1. Battery: Models D-400B and D-500B with varying capacities.
2. Electric Motors: Different models with rated outputs ranging from 7.2 to 17.1 hp.
3. Control System: CURTIS MOSFET type with an operating pressure of 14.5 MPa.

Additional Features
1. Operator Comfort: Spacious driver compartment with excellent visibility and low noise.
2. Control and Display: Multi-function instrument and display monitor for operational information.
3. Maintenance: Easy access to motor, drive gearbox, pumps, brakes, and steering for servicing.