Protected 10440 (AAA size) Li-ion cells! Finally!!!

[Vamp]

Trustfire seems to be the first to put out a new protected 10440, with a reported 600 mAh capacity!

DX has just put it on sale there at a decent price.

Despite the capacity is a clear exaggeration, as they can only be some 350-450 mAh maximum, these are good news for all those LD01, LF2XT,... aficionados ! :twothumbs

They weren't to small for the PCB after all! :grin2: ...they seem to only have grown about 2mm in lenght, maintaining the same width.

The worries of over discharging these beauties seems to be over! ;)

 

[Zeruel]

Re: Finaly protected 10440 (AAA size) Li-ion cells !!

My only worry is if it's too long to fit into some lights.

 

[Phaserburn]

I'd like to see these tested with regards to capacity under load, and the performance of the protection circuit with regards to low voltage and charging voltage shutoff.

 

[matrixshaman]

Yea! I just saw that too - glad I did a search here before posting. With all the AAA lights coming out that can take a Li-Ion it's good timing for someone to start making them. I wonder if AW will make some also.

 

[Patriot]

Re: Finaly protected 10440 (AAA size) Li-ion cells !!

My only worry is if it's too long to fit into some lights.

Same concern here. A guy over in the Maratac thread just asked if these batteries would fit it and asked if the extra "1mm" in length will still work. Now I find this thread and find out that it's actually 2mm instead. I suspect some lights will have trouble fitting this cell. These reminds me of the Ultrafire RCR123 cells that wouldn't fit any of the 2 cells lights. Maybe they should call it a 10460. :p

 

[matrixshaman]

I just ordered some so I'll let you know here what they fit. I can try them in the Fenix L0D, ITP Titanium EOS AAA (when it arrives), Liteflux LF2XT, Liteflux LF2. I think that covers most of my current AAA lights :thinking:

 

[DM51]

Protection circuits usually add at least 2 mm to the length, sometimes 3 mm. If they have managed to fit the circuit into a smaller diameter, my guess is that it will be at the expense of extra length (not to mention the extra diameter due to the metal strip). With many smaller-size lights, obviously including AAA-size, any increase in dimensions will be critical to whether or not the cell will physically fit inside.

We also need to know the settings used for high current cut-out etc.

But this is a very interesting development which is to be welcomed.

 

[bshanahan14rulz]

what's special about these compared to the blue wrapper protected 10440? I bought a pair of blue wrapper 10440 protected ____fire's about half a year ago for a friend's flashlight. Do the gray wrapper ones hold more charge or something?

 

[45/70]

With many smaller-size lights, obviously including AAA-size, any increase in dimensions will be critical to whether or not the cell will physically fit inside.

Yeah, @ 46mm in length (10460 :)), they wouldn't fit in any of my 10440 lights. :( I can't fit the unprotected UltraFire 10440's in my Extreme III's, and they're only 45mm. They don't work that well anyway, so no great loss (Edit: the UltraFires, not the Extreme III's). :)

Dave

 

[Kestrel]

I am wondering about the maximum current that the PCB will permit. One reason the LD01 is such a hotrod is that it discharges LiIon 10440's at over 2C IIRC - perhaps a cell with a protection circuit might not even operate in that light . However, I for one would prefer a protection circuit - I'd prefer another safety layer in the system instead of trying to get the absolute maximum output. Just my two lumens,

 

[AlexD]

One more protected battery http://www.vaprlife.com/10prba.html
size: 10.62*46 mm

 

[flatline]

Why would you want a protected cell in an LF2XT?

The light already had better protection built in (along with a volt meter so you can check whenever you want).

--flatline

 

[Patriot]

I am wondering about the maximum current that the PCB will permit. One reason the LD01 is such a hotrod is that it discharges LiIon 10440's at over 2C IIRC - perhaps a cell with a protection circuit might not even operate in that light . However, I for one would prefer a protection circuit - I'd prefer another safety layer in the system instead of trying to get the absolute maximum output. Just my two lumens,

Great point and I don't know why I didn't even think of this. I highly doubt that the protection circuit is going to allow anything remotely close to 2C. I'm a hot rodder and run 10440's in nearly everything so these cells will likely not be for me even if they did fit, which I don't suspect they will.

 

[DM51]

Post #7

We also need to know the settings used for high current cut-out

Post #10

I am wondering about the maximum current that the PCB will permit

Post #13

Great point

 

[dts71]

"Facts:"

- With integrated PCB Protection
- Over current protection current: 4A
- Over current protection voltage: 0.2V
- Over charging protection voltage: 4.25V +/- 25mV
- Over discharging protection voltage: 2.5V +/- 50mV
- Lithium Ion 10440 cylindrical rechargeable batteries
- Lighting or other device needing 3.7V power
- Product print '600mAh', the exact capacity is 350mAh

The over current protection won't be in the way but rather offer some protection against a shortcut.

 

[Kestrel]

Post #7
Post #10
Post #13

LOL, point taken. ;) I had my window open for the 12 minutes between your post (7) and my post (10), and thought I was the first to be posting that concern. :)

 

[CampingLED]

There seems to be statements made of 1mm, 2mm and 3mm longer in this thread. Based on specs provided on the DX site it seems 1.81 - 1.77 = 0.04 in longer, i.e. 0.04 x 25.4 = 1.016mm longer than the unprotected 10440.

 

[Benson]

If the specs are right, 4A is so high as to be totally pointless except a dead short -- I'm sure your 10440s won't last long in continued service at 3.5A. :poof:

But the undervoltage protection will probably be quite nice to have, and would likely trip so soon at 3.5A as to prevent any :poof:, just drastically shortened life..

 

[Vikas Sontakke]

If you have those button magnets, you can add one or two to your existing 10440 cell and simulate the longer battery and see if the light under consideration can handle it.

Both of my 10440 needs to be replaced and I was almost going to order the protected ones but after putting the magents on my 10440, I realized that my light would not be able to handle the longer protected ones.

 

[45/70]

There seems to be statements made of 1mm, 2mm and 3mm longer in this thread. Based on specs provided on the DX site it seems 1.81 - 1.77 = 0.04 in longer, i.e. 0.04 x 25.4 = 1.016mm longer than the unprotected 10440.

Edited

DX's spec=1.81"

25.4x1.81=45.974mm

By comparrison, AW's original unprotected 10440's measure 43.4mm.

46-43.4=2.6mm :(

Dave