The official recommendation is to use No. 7 dry battery, because the dry battery is not easy to leak during storage, and it will not cause corrosion and other problems with the circuit board inside the device. In addition, the dry battery is small in size, light in weight, easy to carry and replace, more convenient and practical. In addition, when consumers choose dry batteries, it is best to choose batteries with a good brand reputation, so as not to buy fake and shoddy products, and hope to help you.
This is more electric resistant, the general Nanfu battery can be used for a long time.