The day to day cost of batteries can adds up very quickly, but there are some tech items on which you may save money by ...

and D as sizes increased. But as batteries got smaller, ANSI ran out of letters. Instead of starting over, they doubled down — literally. That's how we ended up with AA, AAA, and even AAAA.

Battery size: The main factor in choosing a battery is its size. Small electronics will require a specific size such as AA, AAA, C, D, button cell, 9V or 23A. These range from cylindrical ...

The headphones take AAA sized batteries and can use either disposable or rechargeable varieties. There is a warning label advising that only Phillips brand rechargeables should be used ...