Battery testing mainly includes battery capacity, nominal, charge and discharge performance, high and low temperature performance, as well as some anti-overcharge and over-discharge capabilities and the ability to withstand vibration and shock. The batteries made by regular manufacturers will generally have a higher capacity than the nominal ones, and generally leave room for 10 to 20 mAH . 1. Check the battery capacity with software for testing the battery capacity of your phone. 2. In the case of ensuring that the test process is constant current, select a resistor similar to the resistance of the mobile phone to be connected in series with the ammeter, and then discharge the fully charged (4.2V) battery until the end of 3.7V . Measure the current and record the time. If the recorded current is 200mA , the discharge time is 4 hours. Then the battery capacity is 200X4=800mAh . 3 , handed over to the professional testing department for testing. 304 Stainless Steel Cut Wire Shot Conditioned Longlived 304 Stainless Steel Cut Wire Shot are all produced through German craftsmanship with bright, defect-free and pollution-free material. After strict processing like heat treating, wire drawing, electronic spiral cutting, passivation molding and other processes, our products are strictly in a accordance with German Spring Association standard VDFI8001, German industrial standards DIN8201 and American Aerospace Material Specification Standard. It is widely used for surface shot blasting, sand blasting and shot blasting of stainless steel parts, aluminum alloy die castings, and copper alloy parts. According to different composition, stainless steel is classfied several grades such as 304, 410, 430, 201 and 304 stainless steel Cut Wire Shot is the most popular abrasive of them as its excellent performance. The composition of 304 stainless steeel is: C≤0.07, Cr 17.00-19.00, Ni 8.00-10.00, Mn ≤2, P≤0.035, S≤0.030, Si≤1.00. So you can check if 304 Stainless Steel Shot could meet your requirement. Generally 304 stainless tseel cut wire shot could be classfied two kinds. One is as cut and the other is conditioned. Compared with as cut one, conditioned is without sharpe edges and corners and has near round shape. According to this, you can choose the more suitable one. Ss304 Stainless Steel Cut Wire Shot,Sus 410 Stainless Steel Cut Wire Shot,Sus 304 Stainless Steel Shot Longlived Metal Products Co ., Ltd , https://www.tzlonglivedmetal.com