These batteries are made with Duracell's proprietary PowerCheck feature, which allows you to check the remaining power level of the battery at any time, ensuring you always have power when you need it.

It's important to note that these batteries are alkaline batteries and are not rechargeable. They are designed for single use and should be disposed of properly according to your local laws and regulations. Always make sure to check the device's manual or instructions before inserting the battery, to ensure that you are using the correct type and size of battery. It's also important to follow the instructions on the battery packaging and never mix different types of batteries or old and new batteries together in the same device.