What are the main advantages of rechargeable batteries?

They last extremely long because they can be recharged a thousand times. Although they are more expensive to buy than non-rechargeable alkaline batteries, if you use batteries regularly, the investment in the battery and charger will pay for itself very quickly. So you don’t have to keep going back for a new set of batteries.

Because rechargeable batteries last longer, the amount of alkaline batteries going into waste is reduced, which is better for the environment. Ask in advance whether your application is suitable for using rechargeable batteries.