The energy source called this cell uses 2 chemicals & an electrolyte to get continuous power instead of storing a charge
These wet cells used liquid electrolytes, which were 
prone to leakage and... [DOC] [TLE] Fuel cell - Wikipedia [PAR] A fuel cell is a device that converts the chemical energy from a fuel into electricity 
through a chemical reaction of positively charged hydrogen ions with oxygen or 
another oxidizing agent.