The ability to recharge your batteries offers a long-term solution to your power needs. They can be recharged in a wide variety of chargers and are not limited to any brand or design, as long as they fit AA. For convenience, you can find some chargers are able to charge both AAA and AA batteries at the same time. Rechargeable batteries save you money in the long term as you purchase less disposable ones, adding the environmental benefit of less waste reaching landfill.