The performance of 28V product introduction and maintenance of Jing Jie electric wrench
In the domestic market, the charging wrench is actually nominal voltage 18V, the highest voltage 21V. The same is true for the standard 28V. At present, lithium wrench on the market are 18V, the full power of the highest voltage of 21V, 28V is a virtual object.
The actual battery pack contains 10 18650 electric cores, a single 18650 of the core is 3.6V, a row of 5 series to get 18V voltage, and then the two lines in parallel, to get the capacity of the battery pack. You can use the multimeter to measure the amount of electricity, when the amount of electricity is 18V, full of electricity when the maximum voltage is 21V.
So buy electric wrench is not the key to see the number of V, the industry is very serious virtual standard. The key depends on quality and brand. If you are working or template that is jiazigong, industrial grade work, must buy the famous brand. Do charge wrenches more professional domestic factories, there are big Nanjing, Jiangsu art, Suzhou treasure time, are the top domestic rechargeable wrench.
