Using a combination of aluminum base plates and thermoelectric cooler and LED and 6-liter aquarium.Using 6W LED illumination when produces the waste heat can have the temperature difference with the aquarium,forms the thermal power generation principle.Because the voltage will be sum in serial during thermoelectric coller,during the currentsum in parallel.Under the room temperature the 6 series thermoelectric cooler which difference in temperature of 20 degress.The maximum output voltage of 1V;to six parallel,the maximum output current for the 110mA,the principle thermoelectric cooler recycling generation chips,as a lithium battery charger. Nowadays,many people will be in indoor cultivation the vegetable or plant of no pollution,the light source produced by the LED as the of plant nutrient,use the pisciculture to the cooling of the aquarium,obtain greater resources with a little electric power and now with the promotion of energy saving and carbon reduction and green energy lines.