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Old 03-15-2011, 05:30 PM #161
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Just use one battery if you're using a boost driver like this.... why would you use three?

(and what did you mean by 14000?)


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Old 03-15-2011, 05:32 PM #162
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Err, my memory screwed me over. I meant the Li-Ion AAA size batteries. What other size battery does a hotlight kit take? 18650, right? (And I was thinking of using the three batteries in parallel to increase battery life.
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Old 03-15-2011, 05:35 PM #163
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

In a hotlight, you can actually get a ton of flexibility:

1x 18650 (with mod)
1x 22... something - that big one
3x 10440 (or 2x10440)
2x 15270
2x 16340 (with mod)

You'd got many options, but if you're using a boost driver, do 1x18650 and it's an easy build. I don't see any benefit (at all) to paralleling 3x10440s instead of 1x18650.

Same voltage, less capacity, less current capability, more cells to recharge, more points of failure in the build, greater complexity.... zero benefits (unless I'm missing something!)

I'd go 1x18650 if you're using this boost driver, or 2x16340 (or 2x15270) if you're using a linear driver like an Lm317.
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Old 03-15-2011, 05:38 PM #164
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Hmm. Sounds good. What's the mod required for making it capable of fitting a 18650? But nonetheless, assuming a fully charged 18650, would I be capable of safely running an LOC at around 420mA? Of course it will be heatsinked (one comes with the hotlight!), but I just don't want to overdrive it, ya know? I know I would have to connect the LOC directly to the battery negative and the positive to the driver positive, but are there any resistor mods necessary to decrease output amperage?
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Old 03-15-2011, 06:19 PM #165
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

...I'm pretty sure this driver has a pot for current setting

If you search the forum, there's a tutorial for making the hotlight take an 18650
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Old 03-15-2011, 06:52 PM #166
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

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Originally Posted by rhd View Post
If you search the forum, there's a tutorial for making the hotlight take an 18650
Did you mean this one?
Transplanting a green module into a Blue Mohlight
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Old 03-15-2011, 07:44 PM #167
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Quote:
Originally Posted by Wolfman29 View Post
I just ordered two of them, as well! Should be fun, I should be having an LOC coming in. What's the Vf on an LOC at 400mA? And what kind of current draw am I looking at for the LOC + 1N4001 from the batteries? The reason I ask is because I may put it in a hotlight kit, but I may have to use three 14000s.
I have 22600's available in the Laser Pro Shop and the charger for them. They fit the Hotlight host perfectly snug with no rattling around. They are 2500mAh and are a protected cell.

http://laserpointerforums.com/f64/dt...tml#post873613




EDIT Also my thoughts on putting an 18650 in a hotlight unit is that it can be done but it puts a bit of pressure on the bottom of the clicky which could be bad for it in the long run.

Last edited by DTR; 03-15-2011 at 08:10 PM.
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Old 03-15-2011, 08:19 PM #168
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

on the order page of electronics.net (or whatever its called) it said the pot was for voltage setting. I may have missed a few posts that may have covered this but was just curious. Its been quite a while since this thread first came up.

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...I'm pretty sure this driver has a pot for current setting

If you search the forum, there's a tutorial for making the hotlight take an 18650
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Old 03-15-2011, 10:17 PM #169
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

22600 is ~5mm shorter. Spring mod + battery sleeve should work for 18650, and then you'd be able to get higher capacity than the 22600. But that's assuming you know how to do the spring mod. 22600 would be the easier fix, obviously.
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Old 03-16-2011, 07:57 AM #170
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

So with multi mode drivers is it that every time the driver gets new power into it, it changes mode? as in Off - Low - Off - Med - Off - High?
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Old 03-16-2011, 11:53 AM #171
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Yes, but you can the modes on these.
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Old 03-16-2011, 02:29 PM #172
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

I think you forgot a word in there
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Yes, but you can the modes on these.
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Old 03-16-2011, 02:31 PM #173
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Crappy predictive type on android - "disable"
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Old 03-16-2011, 02:47 PM #174
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

I don't understand. You can disable modes? How so?
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Crappy predictive type on android - "disable"
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Old 03-16-2011, 02:52 PM #175
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

Yep - read this thread - it was discussed in here somewhere. I forget the specifics.
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Old 03-16-2011, 08:41 PM #176
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Default Re: NJG-18, multimode boost driver for 445nm.. and possibly 650nm

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I don't understand. You can disable modes? How so?
I disable the modes by bridging the case pin and the negative pin letting the negative flow back into the driver via the driver negative output. No need to use the drivers negative input.
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