The sailboat battery is relatively large, and it has been used in water for a long time, so its detection difficulty is relatively high, but it can still be achieved for Harris, because the accuracy of our detection equipment can be as high as 0.1pA, which is very suitable for this aspect of sealing and waterproof detection. With the vigorous promotion of hybrid electric vehicles in our country, it is necessary to test the sealing performance of the vehicle battery because the vehicle battery also has the opportunity to enter the water, and the leak detection equipment of Harris is also very suitable for the detection