Self-discharge in rechargeable batteries at room temperature is typically (15% to 25%)/month, and the monthly self-discharge rate in solar cells is lower, about 10%. The phenomenon is extremely low in non-rechargeable batteries, below 2% per year at room temperature, but this value can be affected by many factors.
Of all the environmental factors, temperature is the biggest influence. This relates to the temperature-dependent electrochemical reactions that occur at the electrode/electrolyte interface, where it can be considered the heart of the cell. As the temperature drops, so does the reaction rate at the electrode, and the current decreases.
In use, the gradual return to room temperature is energy intensive. When the temperature rises, the reaction rate of the electrodes also rises, and the current increases, consuming energy. The general temperature of the refrigerator is 0 to 10 ℃, is a good place to put the battery. The second influence factor is humidity. Zinc-air batteries are characterized by a direct connection to the surrounding atmosphere. If the relative humidity is too low, the electrolyte in the battery will slowly dry out; if the relative humidity is too high, the system will store moisture, both of which are contrary to the performance of zinc-air batteries. If the battery is stored in a refrigerator, don't forget that the refrigerator also provides a low humidity environment, which is like food left uncovered in a refrigerator, the food will gradually lose water and slowly dry out. That's why it's best to put the battery in an anti-evaporation package first.