What are the precautions when using the battery?

Leaking electrolyte
Alkaline batteries that have been placed for a long time will leak electrolyte. Because the electrolyte is a corrosive alkaline substance, potassium hydroxide, it will irritate the eyes, respiratory tract and skin. The electrolyte will also corrode metals and damage electronic parts. The electrolyte leaking from the battery can also damage the products using the battery, especially electronic products.
Do not charge alkaline batteries
Charging alkaline batteries can also cause the battery to leak electrolyte, or even rupture the battery. A very small number of alkaline batteries are designed to be rechargeable, but they can only be charged with a relatively small current. It often takes a full day or more to achieve an obvious charging effect, and there are not many recharges, which is quite inconvenient. So it has been difficult to find in the market. There are also some chargers that claim to be able to charge ordinary disposable alkaline batteries, but such products cannot guarantee the performance of the fully charged battery.
Use batteries of the same model and capacity
When more than one battery is used, batteries of the same model or even the same brand should be used; old and new batteries should not be mixed together. Otherwise, the risk of electrolyte leakage will increase.
Store separately when not in use
When the battery-operated device is not in use, the battery should be taken out and stored separately to avoid damage to the battery-operated device when the electrolyte leaks out of storage for too long.