Can a new battery still be used after three years of non-use?

[SanAdam]

It cannot continue to be used. An unopened new battery can generally last one to two years, but it needs to be recharged every three months or half a year, as the battery will naturally discharge even when not in use. Battery storage: The battery should be stored in a well-ventilated and dry place. Batteries are also sensitive to cold and should be kept in a warm environment with temperatures between 5-40 degrees Celsius. Avoid placing them near damp or heat-emitting equipment. Battery charging time: Typically, battery charging takes a long time, with an average charging duration of around 8 hours. It is important to monitor the charging time carefully. If the charging current is high, the battery may charge quickly, but continuing to charge beyond this point can lead to overcharging, causing the battery to lose water and overheat, which will reduce its lifespan.