There are available devices that allow the AA fit C and D devices.

And when an alkaline leak goes unnoticed, it could destroy the device

Usually work well, but won't work in some devices (cheap clocks especially!).

The ability to recharge hundreds if not thousands of times saves money in the long run and the fact that the batteries don’t leak and ruin your device is a absolute no brainer.

Most AA batteries are 1.5V and if you have a sensitive electronic device that needs 1.5V these will give you trouble.

However, in less than a year, six of the eight batteries leaked, damaging the device in which they were installed.

These are good batteries, but I must confess that I was a little sad when I went to Costco for the first time and found a much bigger kit with a charger, AA, AAA, C, and D Eneloop batteries available for $20

Invariably, the D's and E's have had one battery fail long before the others in a set.

well I only have one issue with them and it can be a bit tricky

Invariably, the D's and E's have had one battery fail long before the others in a set.