Battery Size
On many vehicles you will see
Volts
Amp hours
Watts
If you think of the analagy of a bathtub and a drain. The Amp Hours is the size of the tub and the Volts are the size of drain. The larger the volts the faster the tub will drain. The bigger the tub the more water it has to drain.
Motor
Motors are often rated in Watts. A standard bikes usually comes with a 750W motor. The higher the Watts the more power it can consume to get you up the hill.
Controller
Often considered the "Brains of the Operation" the controller handles everything from speed, acceleration, breaking, and heat.
Brakes
Brakes come in three main types.
1. Mechanical Disc Breaks (Most Common)
2. Hydaulic Disc Breaks (Most preferred)
3. Drum Breaks (Often found in smaller scooters)
Tires
Each vehicle type has different types of tires. Here is the short list. If you want more information click on the "Read More" Link
Bikes - Road, Commuter, Off-Road, Fat
Scooters - Air-filled (Pneumatic and Tubeless), Honeycomb, Solid rubber, Road, and Off-road
Skateboards - Park, Cruiser, Longboard, Off-road
Deck
The comfort of riding one of these vehicles often depends on how open or cramped the deck is. But having too large of a deck can often lead to vehicles that are overweight and cumbersome. Finding a good balance is key.