Designed for low-drain devices, the Dorcy Ultra Heavy Duty AAA Battery Pack provides you with enough heavy duty batteries to keep your small electronics running smoothly. These AAA batteries are available in a generous pack of 12, so you have enough batteries to keep your gadgets powered on with more to spare in case you need backups. You can use these batteries in any device that requires a standard AAA battery, such as MP3 players, doorbells, personal grooming devices, flashlights, calculators, digital cameras, and more. With its ample supply, this battery pack also makes a great addition to classrooms, dorms, home offices, workplaces and more, so you can continue your day-to-day routines without interruption.