LiFeP04 18650, 26650, 32600[D size!], 32900[F size!], 42120, high drain...

[mdocod]

if you haven't seen this I think it's worth a look... check out some of these new cells becoming available...

I figured I'd start a thread and throw out some ideas for these cells. (the somewhat obvious stuff that comes to mind just browsing over at bulbconnection)

If anyone buys and tries any of these cells I'd like to hear about the results!

http://www.batteryspace.com/index.asp?PageAction=VIEWCATS&Category=1225

I know batteryspace is usually associated with selling cheaper off-brands like Powerizer, but I think these might be worth a look... I have no clue who makes em or if they hold up to their label capacity and capabilities, but the D size LiFeP04 looks like it could be a solid option for people who prefer the D size mag bodies. I know it's becoming pretty popular to use the ~26670 cells from Emoli and A123 in C size bodies for customs, this opens up a few more doors.

Here's some ideas (I don't honestly know if any of these ideas will *work* but I think they would be fine)

2x18650 in a Leefbody driving an MN21, possibly only 10 minutes runtime, but at least it's safe and compact!

2x32600 in 2D mag driving a 5761 ~30 minutes runtime!

2x32900 in 3D mag driving a 5761 ~45 minutes runtime!

5x32600 in 5D mag driving a 623 ~15 minutes runtime!

4x32600 in 4D mag driving a 625 ~20 minutes runtime!

6x32600 in a 6D mag driving just about any 12V 50-100W halogen rated 4000+ hours. (like a 64450)

5x32600 in a 5D mag driving a 64633, 64634 or 64635 (all 15V 150W 50hr.) ~15 minutes runtime!

6x32600 in a 6D mag driving a 64620 MR16 (~220W re-rated power)might get 10 minutes runtime.

8x18650 in a 5D driving one of these:
http://www.bulbconnection.com/ViewItem/bcrw/itmid/398/oc/FNT/item.html
runtime might be 4 minutes or something, lol... kinda bright though. (a 64653 or 64655 would also work probably) I'm not sure if the cells would hold the voltage to make this worthwhile or not though.

anyways...

I realize A123 systems has the 18650 and ~26650 market pretty well beat with their super high performance under a load.... but these 32600 cells I believe are the first "D" size cell of lithium-phosphate to hit the market and be readily available. 60A drain rates is far beyond what we do with mods even when dealing with mult-hundred watt mods, which still are under 15 amps in almost all cases. So my thoughts are that these may be useful around here....


that M size cell (42120) 12AH has custom lantern/spotlight pack written all over it IMO, kinda pricey though eeek!

 

[winston]

Re: LiFeP04 18650, 26650, 32600, 32900, 42120, high drain...

The spec. sheet for the low(er) drain 18650 gives max. discharge at 10C, while the website has it at 3C. What gives?
-Winston

 

[mdocod]

Re: LiFeP04 18650, 26650, 32600, 32900, 42120, high drain...

I don't think the spec sheet is linked on these yet, I can't bring up a PDF for them from the website.

 

[VidPro]

Re: LiFeP04 18650, 26650, 32600, 32900, 42120, high drain...

The spec. sheet for the low(er) drain 18650 gives max. discharge at 10C, while the website has it at 3C. What gives?
-Winston

i dont know about in this case, but in many situations a "dealer" will list a capability for a cell that the dealer tested it at, and it "works" at that, that doesnt mean (usually) that its good to use it that way, or that it will last many cycles that way. even a manufacture might point out things about a cell.
1) it can do huge charge/ discharge current
2) it can last many cycles
3) it can last many years
4) it has a certian capacity
they didnt nessisarily say that ALL things would always exist, when you do the other things to it

like the capacity listed might be AT some discharge rate, to some set low point. meaning the cell has 3000ma if you discharge at 3amps not 30a.
the number of cycles, might be when charged and discharged using specific methods.
and the max discharge might be for pulse discharges, like when your power tool locks up on a tough project, not when normally used.

but then some people dont care about max longevity of the cell vrses the ability to use it in some harsh application, like RC or hotwire, where getting less life, is life
so specs for Ability, and ability WITH cycles, and ageability, would be different specs. read between the lines

________________________
the secrets are always there
________________________​

 

[LuxLuthor]

Also, with all of the various sources of "safe Lithium chemistry" cells coming out, there are wide variations in performance as you might expect, depending on who makes them.

 

[monkeyboy]

Does anyone know if the 32900 will fit into the Surefire M6 and the 42120 into the extended elephant? (I'm thinking more about LED mods here)

 

[PhotonAddict]

Silly question - how much does the paper insulator add to the diameter of the battery? I'm assuming the listed dimensions are of the actual battery without the tube(?)

 

[BigusLightus]

Is it me or do these cells seem a bit pricey at this time especially when considering the brand?

I'm real anxious for some D and F cell LiFePo's. I'd like to put 4 F's in my 6D Mag and go 12 Volt for the first time.

But for now,

 

[NotRegulated]

deleted

 

[mdocod]

I honestly have no idea if the cells I'm pointing out in this thread are worth a darn or not, but they are of very useful sizes for mods and was hoping someone with deep pockets might take the plunge and check one out. time will tell I'm sure.

 

[morelightnow]

i hope they are good cells, i would really like to use 2 F's in a 3d for a high power hotwire. too bad they are not in stock.

 

[donn_]

Bringing this one back up to see if anyone has tried these larger LiFePo4 cells.

 

[lctorana]

Those F cells are positively mouth-watering.

Just imagine 8 of those wired 4S2P in an 8F shell to run PAR36 hotwires.

Then I look at the pricetag and return to planet-Earth.

 

[Jarl]

I LOVE YOU MDOCOD! (and donn, for the bump)


I've just make a sheet of scribbles on the use of li-ion for a silly powerful light I'm planning, worked out I need 12 (12!!) li-ion C cells. That would cost a LOT, with all the annoying niggles associated with li-ion poof, so I think of alternatives... hmm, A123. But how to get them in the UK? So I take a trip to the batteries section and see this.... I could get away with a single LiFeP04 D cell if the boost drivers were up to it (they aren't, but hey) so I'll just be using 4 D LiFeP04 now... Thanks

 

[john2551]

Silly question - how much does the paper insulator add to the diameter of the battery? I'm assuming the listed dimensions are of the actual battery without the tube(?)

It is not a silly question. I was wondering the same thing. Do you need to leave the paper insulator on when in use so it doesn't short out the battery? Is the diameter listed including the paper or not?

 

[LuxLuthor]

I'm not seeing squat with the powerizer link in op

http://www.batteryspace.com/index.asp?PageAction=VIEWCATS&Category=1225

Is there an updated linky?

 

[donn_]

http://www.batteryspace.com/index.asp?PageAction=VIEWCATS&Category=1273

 

[john2551]

It states: The cell come with removable paper insulator.

• Please don't remove it while DIY

 

[jabe1]

I've seen where people are using kaptan tape instead of the paper, It can be had thinner, just be careful wrapping!

 

[BigusLightus]

The F size fits in a stock Mag D tube with room to spare. No need to remove the paper insulator.