I have a flashlight that uses 4 D cells. It is in constant use. To save on the cost of batteries, I use these converters with Eneloop AA rechargeable batteries. It works well. The converters fit perfectly. The Eneloops give enough brightness and last for a good while. It is cinch to do the recharging. I always have fresh batteries at almost no cost.

Living in Hurricane country I wanted a long term option for power outages with 1 battery size. I have settled on AA Eneloop Pro as the standard for everything and use these as backup for the Ray-O-Vac lantern and a CCrane CCRadio 2 weather radio when the D’s go out. They fit and work well.

I have several battery powered LED lanterns and I was looking for options to use rechargeable batteries to power them. I already had a large supply of AA batteries so I decided to purchase these AA to D size adaptors. These work perfectly!!

These are a quality battery adapter and will save you money in the long run purchase one size battery and adapt it for all your electronics.

We got these to replace some older AA to D adapters we had. These adapters work a lot better. They don't rattle and they also protect the cells. We used to get dents on the top button and flat negative terminal of our batteries from the top of one adapters pushing directly into the bottom of the cell since the bottom of the old adapters was completely open. These adapters enclose the cells completely and prevent this from happening. The other problem with our old adapters was that the spring in some items had a larger diameter than the negative terminal of a AA cell. The negative terminal on the base of this adapter is just the right size, so I don't have to modify the battery springs of devices just so that I can use rechargeable AA batteries. These make using rechargeable batteries in devices that use AA painless and easy.