Modern portable electric tool uses the battery as the power supply, and needs instantaneous high power, long life and rapid charge.
Supercapacitor is connected with battery in series and parallel to have a test with cutting time of less than 5s. The alkaline battery was used for test at first, and the cutting time is 10S, far longer than 5S. Supercapacitor connected with battery in parallel can provide 3-5S cutting time, and when supercapacitor is used to bear large current, the cutting frequency is 100 times. This is obvious change, and battery life will double because of the reduction of peak current. It turned out that attaching supercapacitor can make the product meet application performance.