A fuel cell is a current generator that transforms the energy of a chemical reaction into a DC electric current.
Compared with rechargeable batteries, the fuel cell has strengthened its position over the last few years as a very attractive alternative. The principle, which has been known for a long time, is almost too good to be true. Hydrogen combining with oxygen in the atmosphere produces a current capable of supplying the motor of a vehicle. Instead of the exhaust gases of internal combustion engines, the waste consists of water and a little heat.
The theoretical level of CO2 emission and other pollutants harmful to health: zero. These cells combine two appreciable advantages: a high energy efficiency and the absence of noise.