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Old 10-24-2011, 11:15 PM #1
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Default Looking for High-Discharge 10440

Hey everyone.

For a build I want to do (probably won't be done for over a month), I will probably need a 10440 cell capable of safely outputting about 1A or so. However, I can't seem to find anything of the like - normal LiCo 10440s have a capacity of, at most, 350mAh, and can discharge generally around a maximum of 2C... I am looking for LiFePO4 10440s, because they would easily be able to handle it, but I can't find any.

Anyone know of any?


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Old 10-26-2011, 08:27 PM #2
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Default Re: Looking for High-Discharge 10440

VESUVIUS
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Old 10-26-2011, 09:17 PM #3
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Default Re: Looking for High-Discharge 10440

Thanks man
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Old 10-26-2011, 09:47 PM #4
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Default Re: Looking for High-Discharge 10440

See if this one also serves

UltraFire 10440 AAA Li-Ion 3.6V Rechargeable Battery 500 mAh FLAT TOP CR10440 Lithium Ion
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Old 10-26-2011, 09:53 PM #5
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Default Re: Looking for High-Discharge 10440

Eh... I don't like that it's an UltraFire. Those usually have very little capacity and low current handling ability.
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Old 10-26-2011, 10:21 PM #6
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Default Re: Looking for High-Discharge 10440

Let us know how it goes. It sure is hard to find 10440 in IMR chemistry.
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Old 11-20-2011, 05:08 PM #7
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Default Re: Looking for High-Discharge 10440

I found this source for IMR 10440 just now. http://www.avidvaper.com/products/IM...-Battery.html#

I am looking to build a 10440 (Ultrafire A2, ***y host) powered 445nm unit. These'll be the ticket.

Anybody know if regular 3.7v chargers work for IMR's? IMRs have slightly higher charge-to voltages (4.25V i believe. My charger stops at about 4.16) so I reckon it would still work, just not fully 100% charge them perhaps.
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Last edited by arcaneinsomniac; 11-20-2011 at 05:09 PM.
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Old 11-20-2011, 06:00 PM #8
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Default Re: Looking for High-Discharge 10440

Yeah - that's where I got my IMRs. They aren't have bad.
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Old 11-20-2011, 08:43 PM #9
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Default Re: Looking for High-Discharge 10440

Really interested in how these batteries & your build works out. I love small builds & I've always been a bit uncomfortable with li-ion.
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Old 11-20-2011, 10:40 PM #10
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Default Re: Looking for High-Discharge 10440

Charge IMRs to 4.2V, just like Li-Ion.

monitor voltages. Dumb chargers may not terminate correctly, and if you didn't pay like, $50 for your charger, you probably have a "dumb" charger.

Those look like the same cells as the ones in my link earlier, except that they mention a manufacturer, so that's interesting.
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Old 11-20-2011, 10:47 PM #11
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Default Re: Looking for High-Discharge 10440

Wolfman, what is the build you use these in?

I'm thinking about building a 10440 with a 445nm diode and at 1.5A on the diode it's gonna draw over 2A from the cell. So an IMR is a must in that situation. I think I should be able to come up with a workable design once I get a lathe/mill.

Duty cycle will probably be low. Good thing the multimode diodes are pretty durable.

Edit: I'm getting Ehgemus to build me a 10440 aluminum host... Should be able to have full on duty cycle to deplete an IMR cell in one shot in a full-aluminum host.

Probably should have some measure to prevent overdischarge but I know as long as I own it I'll be paying very good attention when I run such a laser.
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When setting up LFI make sure you check the "Laser On" Option to turn on the signal!! This took me forever to figure out.
M-140 445nm@ 1800mA in L2X body (I have both a 2x18650 and 1x18650 L2X tubes that I drive with either 2x18650 or 2xIMR18350) with G2 LFL lens
Mitsubishi "500mW" 638nm @ 1400mA in Solarforce P1D Grey, beautiful custom Copper heatsink in a waterproof configuration and with a G2 lens You have outdone yourself Flaminpyro!
M-140 445nm @ 1800mA Lazeerer X-Drive 2x14430 host thanks Ehgemus
Crooked 500mW O-Like Crown 532nm thanks Susie (but damnit, it's mounted crooked)
Mitsubishi "300mW" 638nm @ 775mA in Solarforce L2T Waterproof
A-140 445nm @ 1500mA flexdrive, Aixiz 445 lens in Solarforce L2P Waterproof thanks Jayrob
BDR-S06J @475mA L2P thanks Flaminpyro
LPC-826 in Aurora SH-032 Stainless @417mA
PHR-803T @ 85mA

Last edited by arcaneinsomniac; 09-23-2012 at 05:55 AM.
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