Turn your AA’s into D’s

It might be useful, but i think $5 is a bit much. Well at least at my country :)

Yeah, these would work in a pinch…but the whole purpose of the larger cell batteries isn’t for higher voltage (since, yes, AA, AAA, C, D, etc, all are 1.5v) – the larger batteries are so that they can provide LONGER life.

i.e. a device might only require 1.5v, but will draw a higher current, thereby draining the smaller batteries faster.

We used to use a double A and a stack of pennies to fill in when when were short on a D battery.

psh i know how to permanently change your AA’s into D’s. It’s called plastic surgery

Those have been around for years, have been selling them in the shop I work for as long as i can remember

The problem arises when you look at the mah ratings for each size of battery. While D cells have a rating of 20,500, AA’s only have 2,850, or roughly 1/7 the staying power. While these would be a great temp fix when you don’t have any D cells, you’re just not going to see the life you may need out of the device. This could be dangerous if the device is a safety or emergency item.

Yes, C and D cells are annoying, but have you stopped to think *why* the manufacturer has chosen them instead of AA? Larger cells have greater capacity, then are therefore generally used in high-drain devices. A real alkaline D cell will have around 20,000mAh capacity — around 7x as much as an AA. These adaptors might be handy if you’re in a jam and need to power something for a short time, but not really the way to go in the long term..

Thats really cool.