EV’s are electric vehicles.

Some info about Plug-In Hybrids

http://www.eaa-phev.org/wiki/Plug-In_Hybrids.

“Can I charge my electric scooter by mounting a solar panel on the handlebars?”

A small solar panel in the 5-watt range looks great mounted to a scooter. Unfortunately, the capacity of such a panel is inadequate to support practical daily use.

“What size panel would be needed for a practial scooter solution?”

About 85-watts to 200-watts seems to work well during the Burning Man art festival. Panels of this size are too large for scooter handlebars, however, and would be best placed over a larger vehicle as a shade or pulled behind a scooter on a lightweight trailer.

Although the guideline above will work, it may lead you to obtain a more expensive panel than you need, or it may lead you to run down your scooter’s battery. It all depends on the size of the scooter (and you) and the amount of time that you plan on using it each day.

A more accurate determination requires you know the power usage of your moving scooter. If you or an electrically minded friend (an engineer–they’re good for something, you know) can measure the scooter’s current consumption in amps during operation, then multiply that number by the scooter battery’s nominal voltage in volts (usually 12 or 24). The product that you get is the scooter’s power usage in watts. Expect a quantity of a few hundred watts. Compare this value to the solar panel’s power capacity, which also is in watts. If they’re about the same, you can spend about half of the time running and half of the time charging. If the panel’s rating is smaller than the scooter’s power usage, then you’ll need to spend more time charging than moving.

The estimate above is another guideline, however, because it ignores the angle to the sun, dust, whether your scooter can charge and run at the same time, and other such details. The purpose of this estimate is to teach you that 5 watts ain’t enough, and 500 watts probably is a bit more than necessary.