One No. 5 cell is marked with a positive (+) mark throughout, while the other is marked with a negative (-) mark. Typically, the positive pole is labeled with "+" or "pos", while the negative pole is labeled with "-" or "neg".
The positive electrode is usually the anode of the battery, which is alkaline and made of nickel metal. The negative electrode is the cathode of the battery, which is acidic and made of metal zinc. Inside the battery, current flows from the positive to the negative. Therefore, in order to ensure the proper operation of the battery, it is necessary to correctly distinguish between the positive and negative electrodes.
For ordinary No. 5 batteries, the distinction between positive and negative electrodes can be judged by observing the markings on the surface of the battery. If the surface of the battery is marked with a "+" or "pos" marking, it is positive; If marked with a "-" or "neg" mark, it is a negative pole. In addition, positive and negative electrodes can also be measured by using tools such as voltmeters or ammeters.
When using the battery, it is essential to ensure that the positive and negative poles are properly connected. If the positive and negative poles are reversed, the battery may be damaged or not working properly. Therefore, when installing or replacing batteries, it is important to carefully check the markings on the positive and negative electrodes and ensure that they are properly connected.
In conclusion, the easiest way to distinguish between the positive and negative poles of a No. 5 battery is to observe the markings on the surface of the battery. If the marking is unclear or unmarked, a measurement can be made using a tool such as a voltmeter or ammeter. Correctly distinguishing between positive and negative electrodes is one of the keys to ensuring that the battery is working properly.