The battery may not be fully powered.

I. Question proposal

Wireless mouse, gas stove, need to use the battery, and both are used, the use of the moment there must be no electricity, then, these two batteries must be no electricity?

Ii. Problem Analysis

Take the light bulb and a wire, and test the disassembled battery separately. I found that the two batteries still have enough power. What is the problem? It is estimated that the battery with the current flow consumes fast raw materials for chemical reaction, and the main chemical reaction is this one, supplemented by the other.

Iii. Problem Solving

You only need to replace the battery that does not detect the current. If you find a good one, you can save money on one battery, which is also relatively environmentally friendly.