Got a TK10 now there is a TK11?

[unique]

I'm kind of pissed off. I just got my TK10 one week ago now on the fenix store website there are TK11's and its few dollars cheaper!
Did I do wrong by purchasing the TK10 since their is a newer one out ALREADY.
What are the differences in specs between the TK10 and TK11? :sigh:

 

[Crenshaw]

get used to it...things like this happen alot, stuff changes, and you JUSt bought the other thing...im sorry this happened to you,

the tk11 runs on 18650 rechargable batteries. it willalso run on 3.0v Lithium batteries, but i think they will not run on RCR123A. Its also slightly bigger then the tk10. If you already have a tk10, just be happy with it...they are pretty much the same thing.

they are both as bright, as as well built as each other.

Crenshaw

 

[hyperloop]

would there be a difference in runtimes if its running on an 18650?

 

[Crenshaw]

slightly increased runtime on 18650 due to its higher capacity then CR123A, but not by much.

Crenshaw

 

[Niconical]

I'd say a bit less as the mah (capacity) of 1x18650 is lower than the combined mah of 2xCR123A primary, but you should probably wait for a more experienced member to confirm before making any buying choices based on that.

Looking at the bigger picture though, the option to use the 18650 far outweighs (IMO) any reduction in overall runtime.

 

[Niconical]

slightly increased runtime on 18650 due to its higher capacity then CR123A, but not by much.

Crenshaw

Oh well, like I mentioned, wait for someone who knows!

I'm surprised actually, I assumed (and that was clearly my mistake...:naughty that a 18650 would last less I I've seen them at around 2400mah and 2xCR123A primary seems to be about 2800mah.

I still have long way to go up this learning ladder!

 

[Crenshaw]

from wikipedia entry
123 Camera Battery__________ 1500 (Lithium)
___________________________ 700 (Li–Ion)




because the light is using 2 CR123As at one time, its like one big 6v battery that has 1500mah in side it. If that analogy Makes sense.

While, a 18650 (from AW's sale thread):
Protected 18650 ( 2200mAH )

and a rechargable CR123A (16340) again from aw's sale thread:
Protected R123A ( 750 mAH )

so a light running at 3.7v from a 18650 will last longer then 2 CR123A.....

at least, im pretty sure....

Crenshaw

 

[TONY M]

It will run longer with 18650s. Its not an upgrade from the TK11 nor is it "better", but rather a 18650 compatable light.
Some will prefer it to the TK10 some will not.

 

[Noxonomus]

Oh well, like I mentioned, wait for someone who knows!

I'm surprised actually, I assumed (and that was clearly my mistake...:naughty that a 18650 would last less I I've seen them at around 2400mah and 2xCR123A primary seems to be about 2800mah.

I still have long way to go up this learning ladder!

I wrote a excessively long explanation and then lost the post, unfortunately I cant bring myself to type it again, but the important bits were...

When cells are in series the voltage adds but the capacity in mAh does not, so the capacity of the 2 CR123As will still be 1400mAh or whatever and if you really want to compare the capacities of cell with different voltages you need to calculate Wh first. So... for the 18650 2400mAh*3.6V=8.6Wh, and for 2 CR123As 2*1400*3.0V=8.4Wh. The efficiency of the light at the different voltages and how far you can drain the cell in the light also dictate how long it will run.

 

[Niconical]

Thanks for that

I know that feeling of losing what you're written. I've lost some posts myself sometimes so I have gotten into the habit of copying the text to clipboard before clicking submit or preview. Worst case it fails, I can just reply again and right click/paste the orginal.

 

[gsnorm]

I'd say a bit less as the mah (capacity) of 1x18650 is lower than the combined mah of 2xCR123A primary, but you should probably wait for a more experienced member to confirm before making any buying choices based on that.

Looking at the bigger picture though, the option to use the 18650 far outweighs (IMO) any reduction in overall runtime.

Pretty sure that when you have 2 cells in series (as in your light) you add the voltages whereas the capacity remains that of each cell. If 2 cells in parallel - add the capacities, voltage the same as each single cell.

 

[tazambo]

The TK11 also has a smooth refelector, the TK10 does not.
So the TK11 should have slightly better throw.

Regards
Dave

 

[husky20]

If i bought one i would just get the regular TK10 im waiting for more lumens before i buy another i allready have the P3D Rebel 100 and the LOD Rebel.those are good enough for now untill they hit at least 400lumens or the LOD hits 120 stock then im in.I also have a 3D CELL Maglight with the seoul p7 its awesome!

 

[LukeA]

I wrote a excessively long explanation and then lost the post, unfortunately I cant bring myself to type it again, but the important bits were...

When cells are in series the voltage adds but the capacity in mAh does not, so the capacity of the 2 CR123As will still be 1400mAh or whatever and if you really want to compare the capacities of cell with different voltages you need to calculate Wh first. So... for the 18650 2400mAh*3.6V=8.6Wh, and for 2 CR123As 2*1400*3.0V=8.4Wh. The efficiency of the light at the different voltages and how far you can drain the cell in the light also dictate how long it will run.

No CR123 has anywhere near 1400mAh. They top out at half of that.

 

[xcel730]

TK10 and TK11 is similar enough that if you have a TK10, there's no reasons you'll need to get TK11 ... unless if you really want to use 18650 or you're a Fenix collector.

 

[HKJ]

No CR123 has anywhere near 1400mAh. They top out at half of that.

May I suggest your read this thread: http://www.candlepowerforums.com/vb/showthread.php?t=67078

1400mAh is a good estimate

 

[rmorgan84]

May I suggest your read this thread: http://www.candlepowerforums.com/vb/showthread.php?t=67078

1400mAh is a good estimate

He was probaby referring to rechargeable ones to be on an even playing field with the 18650?

 

[unique]

Thanks for the reply guys. Someone posted here that I should hold back buying another torch when the lumen's are about 400 or so

 

[Burgess]

Now, hurry up and purchase a TK11 model.


Then, the new P7-TK12 will be announced !


:devil:
_

 

[Tekno_Cowboy]

Pretty sure that when you have 2 cells in series (as in your light) you add the voltages whereas the capacity remains that of each cell. If 2 cells in parallel - add the capacities, voltage the same as each single cell.

True, but that's more voltage matching. The total capacity is the same in the end. (1.4Ah(2 cells x 3.7V)= 3.7V(1.4Ah x 2 cells))

IE: a driver that puts out 3.7V will be more efficient running on 3.7V input than 11.1 input, even though they use the same 3 cells. When the voltage is closely matched, the driver needs to do less work. The harder the driver has to work, the more heat is produced. Heat being produced means that some of the energy from the batteries is being converted into heat, the hotter it gets, the more energy is lost.

Someone please correct me if I'm wrong.