Energizer Recharge Universal Rechargeable 9V Battery saves money and reduces your impact on the environment. Made with 7% recycled batteries, these 9 volt rechargeable batteries use innovative, industry-leading technology to provide a lasting charge. Using these rechargeable 9 volt batteries creates less waste and provides a convenient power source. These Energizer 9V batteries are designed to prevent leaks that can damage your electronics. Use these rechargeable Energizer batteries as a clock battery or in toys and other electronics that require 9 volt batteries. Each Energizer 9 volt battery can be recharged in an Energizer battery charger hundreds of times. The 9 volt rechargeable battery holds the charge for up to 1 month in storage. Innovation makes Energizer the number 1 rechargeable brand.