Introduce the differences between batteries and fuel-powered batteries

Fuel-powered batteries are energy conversion devices. During operation, they must receive energy (fuel) input in order to generate electrical energy. Ordinary batteries are energy storage devices. They must first store electrical energy in the battery before they can output electrical energy. During operation, they cannot receive energy input and no electrical energy is produced. This is the fundamental difference between fuel-powered batteries and ordinary batteries. 

Once the technical performance of the fuel-powered battery is determined, the electrical energy it can generate is solely dependent on the supply of fuel. As long as fuel is supplied, electrical energy can be generated, and its discharge characteristic is continuous. Once the technical performance of a conventional battery is determined, it can only output electrical energy within its rated range, and it can only be reused after repeated charging; its discharge characteristic is intermittent. 

The mass and volume of the fuel power battery itself are not large. However, a fuel power battery requires a fuel storage device or fuel conversion device and ancillary equipment to obtain hydrogen. And these fuel storage devices or fuel conversion devices and ancillary equipment have much larger mass and volume than the fuel power battery itself. During operation, the fuel will gradually be consumed along with the electrical energy generated by the fuel power battery, and its mass will gradually decrease (referring to the limited fuel on the vehicle). Ordinary batteries do not have other auxiliary equipment. Once the technical performance is determined, whether the battery is fully charged or discharged, its mass and volume remain basically unchanged. 

Fuel-powered batteries convert chemical energy into electrical energy, and ordinary batteries also convert chemical energy into electrical energy. These are their common points. However, when electrical energy is produced in fuel-powered batteries, the reactants involved in the reaction continuously consume and cannot be reused. Therefore, reactants need to be continuously input. The active substances in ordinary batteries change with the charging and discharging of the battery. The active substances undergo reversible chemical changes repeatedly, and the active substances do not consume. As long as some electrolytes and other substances are added.