UltraFire AA 1.5 Volt Performance Alkaline Batteries - Pack of 4 Grain. UltraFire BRC 26650 3.7V 5000mAh Rechargeable Lithium Battery 2PCS. you will understand why I am hooked on them. UltraFire 18650 3.7V Li-ion 2200mAh MAX battery rechargeable battery. when you see the benefits of getting with the times. The light that these little gems emit is awesome and although these batteries seem to be a bit high priced. and have a few of these batteries charged and ready to go and you will see why I am a fan of them. UltraFire Battery LC10440 3.6VCapacity: 600mAhRechargeable for 600-800 timesPeak Voltage: 4.2VNominal/Working Voltage: 3.6VTemperature: -40C60CDimension. Also, get a smart charger that will charge these up right for you. also be careful to store them in a different area than those types of batteries so you and others won't make the mistake of getting this wrong and ruining your devices. These batteries are about the same size as a AA batteries and will fit a lot of those types of devices so be careful with them. Make sure of the voltage requirements of anything you put these in before doing so. you will not be happy with the result of doing that. but don't support the higher voltage of these. AAA ULF1000 1.2V 1000mAh Rechargeable Battery AAA Battery 10440 Battery AAA. The voltage of these batteries is 3.7 volts and you need to be careful not to put any batteries that have this voltage in the types of devices you have that they may fit in. Description: UltraFire AAA 1.2V 1000mAh Ni-MH Rechargeable Triple A Battery. I'm a dinosaur but you are living in my past and living in dino land too if you don't get with the program here. These new style of led flashlights that these batteries power, have so many advantages over the way flashlights were made in the days of old.
I have several of them and the small size of these flashlights are soooo much better than the old style type of bulky flashlight that I grew up with. I have them now and don't need high performance, so I'll keep them.If you don't own an led flashlight that uses these types of batteries you need to look into it. If I was looking to get cheap batteries I would have just aimed for cheap ones, I got mislead somewhere else that ultrafire was very good, now all I hear is how overrated and bad they are. I have to admit they work, but are not powerful. I expected at least 250-350mah for a "500mah". After the thoroughly, but not too deeply draining the 2 I bought, I charged them for about 80 minutes at 0.1A and put about 120mAh back in. By the way these tend to hold their voltage around 3.6-3.45v average even without a load, kind of low. For testing I ran it down to a safe 3.000v 3 times using an 8ohm then 10ohm then 25ohm load until the voltage drop became very rapid signaling it is about empty. They came with the standard charge of 3.87v, a good sign, but I had to charge them super slowly at 0.1A to keep the voltage down and get more capacity in which was only 25mAh to reach 4.2v at 0.1A. I have a lot of experience with lithium batteries, and these are my first AAA style cells as I normally use plain brick cells.
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