Because the new battery has more chemical reactive substances, the terminal voltage is higher and the internal resistance is small, while the old battery has a lower terminal voltage and the internal resistance is large. If the old and new batteries are used in series, the charging voltage at both ends of the old battery will be higher than the charging voltage at both ends of the new battery under the charging state. As a result, the new battery is not yet fully charged, and the old battery is already too high. In the discharged state, the capacity of the new battery is larger than that of the old battery, As a result, the old battery is overdischarged, and even the old battery is reversed, causing side effects due to battery bulging. It will consume the electricity of the new battery, and also cause unstable voltage inside the appliance. It also poses the danger of over-using the old battery.
Old and new batteries must not be mixed and used. Mixing and matching not only fails to save electricity, but also wastes electricity. As a result, the loss is not worth the gain.
Batteries are already very common in our lives, and the application range of batteries such as home appliances and automobiles is very wide. Batteries play a very important role in our lives. We all know that when the batteries are old, they must be replaced all, and they must never be mixed with the old and new.
Since people do not know much about the use of batteries, some mistakes will occur more or less in the use of batteries. For example, old and new batteries are used in series together. However, this practice will shorten the service life of the new battery.
Old and new batteries must not be mixed and used. Mixing and matching not only fails to save electricity, but also wastes electricity. As a result, the loss is not worth the gain.
Since people do not know much about the use of batteries, some mistakes will occur more or less in the use of batteries. For example, old and new batteries are used in series together. However, this practice will shorten the service life of the new battery.