If the battery is left for a long time, there will definitely be problems, whether it is a lithium battery or a lead-acid battery or a nickel-metal hydride battery.
Because of the internal resistance of the battery, especially the combination circuit has a combination circuit, after the combination becomes the battery internal battery, so the internal resistance is larger, the self-discharge is also relatively large, when the battery voltage is low to a certain extent, then discharge An irreversible chemical reaction will occur, that is, the capacity cannot be recovered after charging.
Under normal circumstances, the battery needs to be charged and discharged for three months, so as to avoid capacity degradation caused by excessive storage. Generally good manufacturers can be affected for half a year. A battery that is stored for one year will basically have an unrecoverable attenuation of capacity. At least 10%. Almost 30% of the battery
Therefore, it is recommended that you purchase the battery, at least once in the first half of the year to recharge the battery.