DIANN 20pcs AAA to AA Converter AAA to AA Battery Adapter AAA to AA Battery Converter Holder AAA to AA Adapter

These do exactly what they say and are perfect for it. Thank you.

I can never find the lithium AA battery's that I need so now I use AAA battery. They actually last the same length of time as the AAA. best investment I've made in along time.

Work like they are supposed to. Just make sure to put the battery in the correct position or the short will melt the plastic. Overall, they doe what they are supposed to.

They work fine. China is known for mega production of any given product, they sell to multi distributors who slap their name on it. So when you compare any of these adaptors, they are made by the same machinery as the other brands that look exactly alike.These have a little slack to accommodate slightly different types of AAA battery, like alkaline vs rechargeable.But they have a cathode end that tightens to the battery when installed to the AA device with a tension spring - they all have springs.In other words, they work fine.

....until I wasn't. Ok let's be honest, in theory it would work, but for how long? If the battery has the power...for the full life. But if you're not supplying your object with enough power.... for 2 days. With th price of these, I could have just purchased the AA batteries that I needed anyway. And for the record, I ended up having to purchase the AA batteries 2 days after using these because the AAA went dead because why....? Not enough juice.

These worked for some things, but they are not perfect fitted for some electronics I'm trying to use them for. Basically, they are hard to put into many devices and hard to remove as well. But they do work on a number of other devices. The problem seems to be that the positive (+) end is a bit thicker/wider then a normal AA battery.

Really wanted to like this product but when I put the battery inside the electrodes did not touch so it did not work very disappointed maybe Jen 2 will be better