New 18650 with 3000mAh from KD

[maxilux]

Anyone tested this:

http://kaidomain.com/ProductDetails.aspx?ProductId=6813

3000mAh ??? can it be ?

 

[Anders]

Hello maxilus.

They seem to be bigger than normal 18650:s:
Length: 7.00cm
Width: 2.00cm

Anders

 

[maxilux]

They call it 18650, i think with 5mm more length you get problems in many Flashlights. Then i must 20700 ?

 

[phantom23]

Their description is not very accurate (no proper size for most products, some 18650s are 8x3cm...). Proper thread:
http://www.candlepowerforums.com/vb/showthread.php?t=217485&page=3

 

[monkeyboy]

Yeah, I've noticed that the descriptions and measurements on KD are often inaccurate.

 

[orbital]

Anyone tested this:

http://kaidomain.com/ProductDetails.aspx?ProductId=6813

3000mAh ??? can it be ?

+

I hope it isn't a bull$hit specification item designed for fleaBay,..still interesting.

 

[phantom23]

Post 69:
http://www.candlepowerforums.com/vb/showthread.php?t=217485&page=3

 

[orbital]

Post 69:
http://www.candlepowerforums.com/vb/showthread.php?t=217485&page=3

+

thanks

 

[Fallingwater]

They are twice as expensive as 2.5Ah Trustfires from DX. For 500mAh added capacity and a size incompatible with most lights. Thanks, but no thanks.

 

[cernobila]

Fired an email to Jerry at Kaidomain to clarify some questions......bit of luck we will have some answers in the next day or so......

 

[worldedit]

I ordered the unprotected version and got an email a few days later. They said the cells arent produced any more and i should order the protected version. I already have the grey trustfire 2400mah cells everyone recommends. They perform pretty bad. 1600mah and high internal resistance. I hope those 3000mah will turn out better.

 

[Whitedog1]

Post 69:
http://www.candlepowerforums.com/vb/showthread.php?t=217485&page=3

hey guys don't hope they will perform better, they won't!!

LOOK :wave:

 

[cernobila]

Well, I had a good look at the graph of all the cells and what I was interested in was the performance of the AW 18650 2200mAh cell. Not sure what to make of that.....the Ultrafire 3000mAh cells were very similar in performance and had higher numbers than the AW cell. If they would fire up the WA 1111 and WA 1185 bulbs as well as the AW cells, then I see nothing wrong with the UF's.

Pity we don't see such graphs showing the other cells such as the Sanyo, Samsung, Panasonic, WE and Pila.......but then again its too early to say......

 

[LIGHTSMAD]

 

[Fallingwater]

I ordered the unprotected version and got an email a few days later. They said the cells arent produced any more and i should order the protected version. I already have the grey trustfire 2400mah cells everyone recommends. They perform pretty bad. 1600mah and high internal resistance. I hope those 3000mah will turn out better.

Trustfires don't usually perform badly. Have them replaced. DX will usually ship replacements for you if you tell them your cells are defective in a usefully short time after having received them.

 

[Jay T]

Well, I had a good look at the graph of all the cells and what I was interested in was the performance of the AW 18650 2200mAh cell. Not sure what to make of that.....the Ultrafire 3000mAh cells were very similar in performance and had higher numbers than the AW cell. If they would fire up the WA 1111 and WA 1185 bulbs as well as the AW cells, then I see nothing wrong with the UF's.

Pity we don't see such graphs showing the other cells such as the Sanyo, Samsung, Panasonic, WE and Pila.......but then again its too early to say......

Yea, the UF 3000s look good, for a low current draw LED.

For a hotwire they ain't too promising. Look at the voltage they deliver. At 1A they hold their voltage as good as the other cells, but, at 2A they put out the lowest voltage. That dosn't inspire me as to their expected performance at 3A+

 

[Tohuwabohu]

I bought a pair of the UltraFire 3000mAh batteries from hkequipment.net.
The came in a clear plastic case.

They have nearly the same diameter as my 18650 from AW but are about 1mm longer.
They just fit in my Jetbeam Jet-III Pro but the end of the battery is flush with the end of the battery tube.

I did discharge tests at 1A and 2A on these batteries.

Ultrafire protcted 3000mAh, Trustfire unprotected 2500mAh, Trustfire protected 2400mAh, Cytac protected 2200mAh (flat top), AW protected 2200mAh and 4 KD 1950mAh.

They look quite good at 1A discharge current.

At 2A discharge current they don't look as good.
The capacity is well below the 1A discharge value and the voltage is lower than that of the other batteries (I did not test all of my crappy blue ones from KD at 2A).

I'm not sure if I wil do a test at 3A as I don't have any flashlight with a current draw that high.
But I already started a test at 0.5A

 

[Whitedog1]

ok, well, ähhmmm let's forget the ultrafire's :thumbsdow

just stick to THIS :bow:

 

[phantom23]

ok, well, ähhmmm let's forget the ultrafire's :thumbsdow

At 0,5A standard discharge rate capacity should be around 2,7Ah which is nice.

just stick to THIS :bow:

Unprotected, expensive, limited quantity... (and discharged @0,5A!)

 

[monkeyboy]

Thanks for those tests Tohuwabohu :twothumbs looks like these will be great for lower drain flashlights. I think I'll probably stick to AW's for high drain and direct drive LEDs due to the flatter discharge curve.