How long rechargeable batteries last depends on what device the battery is powering and how long it is turned on.
Rechargeable batteries should hold their charge longer while not in use. The lifespan of rechargeable batteries can be up to 7 years.
Rechargeable batteries are used in various garden tools, such as battery powered hedge-trimmers and lawn mowers. How long rechargeable batteries last in these cordless tools will depend on the Amp Hours (Ah) of the battery. The higher the Ah, the longer it lasts.