For the Performance, you can check the video by the following youtube link

https://www.youtube.com/watch?v=hpG4OQjlqgQ

For Installation, please check the video in the following link

https://www.youtube.com/watch?v=1Lpr0EQ3kTs

Generation II 48V500W Electric Attachable Handcycle for 16" x 2.5 Wheel Chair 48V10.4AH Lithium battery, carry bag style, Sealed Waterproof

If you need an extra backup battery, extra USD210.00 is needed.

Compare to Generation I, the Generation II Electric Handcycle has the following features

1, Rotatable Wheel

2, With Shifter to connect or disconnect the connecting arm to the wheelchair, Regarding how the shifter work, please check the following video

https://www.youtube.com/watch?v=mlGswpEFd_c

3, Adjustable Stem

4, Fixed Brake Block

Includes the 16" x 2.5" motorized system wheel and tire, Bike stand, Two Handle bars, 2 x Adjustable Mounting Brackets, KT Brand LCD5 display, headlight, 2 x Disc Brake, Speaker & 48V10.4AH Carry Bag Type Lithium battery & 2A charger(please be noted that the order does not include the wheel chair) 

Feature

• The electric handcycle can turn your everyday wheelchair into a fast, hill climb vehicle, made of stainless steel, The battery and mounting attachment can be easily detached from the wheel chair, the handlebars can be loosen and slide down for compact transportation;
• Top Speed: more than 35km/h(about 21 miles/h) for 48V500W; 

• Driving mileage per charge:  about 28km per charge for 48V10.4AH battery. 

• LCD display shows battery power level, time, speed, mileage, gear. Components error checking and report

• Installation Suggestion: the front wheel leave the ground about 1.6".
• The electric handcycle requests you to mount 2 small brackets on your wheel chair frame, the mounting brackets are adjustable, so it fits any size wheel chair frame tube.
• Double Disc brake, so it fits all the left-hand and right-hand users.

Specification 
1,48v500W brushless geared hub motor; 
2,48V10.4AH Li-on battery carry bag type;

3, Wheel size: 16" x 2.5 Front Wheel";

4, Brake system: Disc Brake

5, KT brand smart Built-inside Controller

6, Stainless Steel Frame.

7, Twist Throttle

8, PAS

9, LCD5 Display