Perfect for headlamps and other small lights.

These are vastly superior to other rechargeable AAA batteries

I bought these for all the remotes in the house to cut my costs. With my charger these are saving me money in the long run.

I've been buying from BatteryJunction for 8 years. Granted, it took me a little while to sort through all the different types of batteries in order to determine the best value for the money of all the options that Battery Junction provides. I'm going to summarize for you my experience over that time.
I used to buy Duracell Procell batteries because they were the best buy compared to any other retailer. Then, after much research, I started to get a little smarter. Battery Junction, if you look, has an enormous amount of information on how to choose batteries depending on your needs. By all means take advantage of that. A good place to start is the category under batteries labeled "applications" and "type". There is a world of information there.
Many years ago I tried looking at rechargeables because it just seemed to make sense. However, I found out the hard way that Duracell and Energerizer made crap for rechargeable batteries - literally most failed in one to two charges. Today, there is a whole world of much...MUCH better choices. The VERY best are the Eneloop low self-discharge batteries. They are the best that money can buy. I've bought 104 AAA and 72 AA Eneloop batteries over the last six years. Not a single one has failed and you can just keep charging them over and over and over again.
The BIG thing that I've learned is that alkaline batteries destroy devices by leaking and causing corrosion and device destruction. Rechargeables do NOT leak. I've saved hundreds of dollars by converting to these batteries by eliminating the destruction of devices...not to mention the much lower cost of using rechargeables.
The very best charger is the Nitecore D4 Digicharger. You can't beat it.
Finally, noting that Eneloop are 1.2 volt NiMH, out of the hundred or more devices for which I need batteries I have only a few that actually require the higher 1.5 voltage batteries. For those I have to stick with alkaline batteries which is very risky however I recently ordered some of the Xtar 1.5v rechargeables. I'll but in another review once I check them out.
Good Luck All.

If you do a little digging you will find these are rated for 600 charges not the 2100 claimed on the box. 600 is still really good. I use these in my camping headlamp, and when camping season is done they will go a year without a charge. I don't bother trying to top the of at the start of the next year anymore, because when I did in the past the charger would show them as done in about 5 minutes. I don't really know about the claimed 10 year shelf life, but 1 year at room temperature they can differently handle.