These red Ultrafire batteries compared to blue Ultrafire batteries?
1034089
These are fakes (most likely recycled laptop batteries)...one of the 8 I bought were dead, there is no circuit protection, and label contains a spelling error. If you want cheap cells, these are for you...just don't expect anything special.
1034090
Check the Mah number with the battery. The higher the number the longer they with hold a charge. The red are usually 3000 Mah. The light blue are usually1200-1800 Mah. I have seen a darker blue with 3600 Mah. The black and gold are usually 4000 Mah. The logic here is the higher the number the longer the battery should last per charge and I assume the more charges it will take during its life. I have some red and some black (3000 and 4000). I have charged some up to 40 or 50 times and they still run strong and hold their charge when not in use for a good period. A 900lm/1000lm rated light will run on high power for at least an hour straight on the red and 75+ minutes on the black. I hope that is helpful. Check the Mah number with the battery. The higher the number the longer they with hold a charge. The red are usually 3000 Mah. The light blue are usually1200-1800 Mah. I have seen a darker blue with 3600 Mah. The black and gold are usually 4000 Mah. The logic here is the higher the number the longer the battery should last per charge and I assume the more charges it will take during its life. I have some red and some black (3000 and 4000). I have charged some up to 40 or 50 times and they still run strong and hold their charge when not in use for a good period. A 900lm/1000lm rated light... » Read More Check the Mah number with the battery. The higher the number the longer they with hold a charge. The red are usually 3000 Mah. The light blue are usually1200-1800 Mah. I have seen a darker blue with 3600 Mah. The black and gold are usually 4000 Mah. The logic here is the higher the number the longer the battery should last per charge and I assume the more charges it will take during its life. I have some red and some black (3000 and 4000). I have charged some up to 40 or 50 times and they still run strong and hold their charge when not in use for a good period. A 900lm/1000lm rated light will run on high power for at least an hour straight on the red and 75+ minutes on the black. I hope that is helpful. « Show Less
2008626
They charge much faster, they are lighter and last longer (typically). Watch for the cheaper batteries from China, they are NOT built the same and don't always have the same quality. They do not charge in the same charger as the standard batteries. They fit in most every tool but do not work in the radio and won't charge in it.
629167
Well 4000 is bigger than 3000.... But there is currently no such thing as a 4000mah 18650 cell, and the official UltraFire website does not list these, so they must be fake.
1623661
I found that these Orbtronic batteries are smaller than some green batteries, I forget the name of them, I sent them back because they were too tight to fit in a couple different flashlights I had. I have had no problems with these Orbtronic batteries.
855418
Great flashlight! But unfortunately it came with two, very lame, COUNTERFEIT UltraFire batteries. They say 3000 MAh, but are probably only 1000 MAh. This is also supported by the weight of the batteries. A normal 3000 MAH Lithium battery weighs in at 1.5-1.7 oz. These are only 0.5 oz. Also, I sent a picture of these batteries to UltraFire and they said that it is not theirs.
1915603
Probably depends on where you buy it from. Different vendors use different batteries. Mine are the ultrafire. They seem to work OK. Initially, i did not leave them in the charger long enough and was somewhat disappointed.When you use the charger, leave the battery in until light turns green and that will fully charge the battery.
1670111
Mike S...did you actually receive Red Lithium batteries, or the older lithium ion batteries?
1209039
These batteries are not same as cr123. They are bigger and stronger than cr123's and they will fit inside unique fire uf-2200 flash light.
597502
I have purchased two different sizes of CREE flashlights. One takes the small blue batteries shown in your picture. The other takes a larger battery. Please contact your seller to get the correct ones.
790741
the batteries are very similar, but not the same. there is a slight difference in actual size
1744339
I have the same issues! I have had great success with the 750ma (green) batteries, so I ordered some of these 900ma (blue) batteries hoping for longer life. Instead I got varying voltages, higher than 3.0V that the flashlight did not like, plus, they are slightly bulkier and get stuck in the flashlight. They should be built to the same standard, but they are Not!
346949
the one i received was "ultrafire" and i have no complaints. this a very bright flashlight and the quality is excellent. i am very pleased with this light.
1261965
I use Ultrafire (from China) and Panasonic (from Japan) in a number of flashlights. I have charged all of them at least 10 times each, and can't really tell any difference between them. They all charge within 12 hours, pretty slow, but hold the charge for a long time; I'm talking about many months if you're not using them. Hope this helps.
1920612
To tell you the truth I have never even noticed any difference. These batteries perform every bit as well as the Sony batteries and I have used them for years. The package deal is the only way to go, and after market offers have proven to me to be a great savings without loss of quality. Good Luck.
1201721
http://www.amazon.com/gp/product/B00AQPZM7U/ref=oh_details_o02_s00_i00?ie=UTF8&psc;=1I bought these ultra fire in the link above. Just as long as you charge them all evenly and dont mix batteries youll be fine. Oh and by the flash light a great! The quality surprised me. Really bright, I can compare to NITECORE TM11 but way cheaper. So when you drop it you wont care to much
1487961
I checked the black and decker site and the batteries look the same, the only difference is that the model number for the flashlight battery has an "R" in it - LBXR20, the voltages are the same
933458
All I know is that when I bought this set myself, it came with 2 Ultrafire BRC 18650 3000mAh 3.7V li-ion batteries (Red/silver, not black/gold striped) Thanks