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Various Flashlights And Things Get 18650ed
#1
I changed the title here, as I'm adding more flashlights to the thread that I've 18650ed, rather than start a new thread for each one. Smile


Here is the vintage headlamp I did to start with:

Ok, the headlamp may or may not be vintage, but it certainly looks vintage. It's one of those headlamps with the power cord that runs down to a belt pack. It worked ok as it was, but it takes 6 D cells to run a dim little bulb. I've been wanting to upgrade this thing since before I knew about 18650s. So here it goes.

I found that 4 cells fit just about perfect if they're wrapped in some pipe insulation. I also want to keep modification to a minimum so that the lamp could be restored to its original function if such a thing were to be desired.


A while back, I replaced the incandescent lamp for an LED. I don't remember the details now, but it runs on something like 3-4V.


The original power cable is in good condition, so I've left that alone. For the battery, I picked out 4 cells of the same brand and roughly the same capacity. I put an extra wire on each end so I can add a TP4056 board. That way it can be charged via USB without being removed from the case.


The lid has a small junction box, so it was fairly easy (although crowded) to connect the battery to the power cable.


Since I bypassed the original switch, I added one inside the box. I used hot glue to keep things in place, and to coat a few exposed bits to prevent shorts. There's even enough room left to hide a USB cable.


Still needs a new elastic head band, but I did put a piece of leather on the forehead part for some added comfort.


Still looks all vintagy and original on the outside. Lighter now than if it had 6 D cells in it, and USB rechargeable. The battery has something like 6Ah and the bulb draws around 0.32A. So if I've done my math right, I should get about 18 hours of use per charge.
Stefaan De Ridder, Korishan, wim And 1 others like this post
-Mike G
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#2
Very nice! Cool
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
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#3
Quite nice for a small project.
The power of lithium ion is in our hands!
We'll show them what we're made of!
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#4
Always liked that old gear well done...
___________________________________
18x 300Wp solar off grid and 10x 180Wp solar tracker grid-tie
10KW 3phase hybrid inverter. 40Kwh 18650 storage (for now)
My setup: https://secondlifestorage.com/t-Instant-powerwall
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#5
cool vintage stuff
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#6
That's a cool project. More ideas for me to think about.

What were the connectors that you used for the cells? I'm sure I've seen something like that, but can't remember where.
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#7
I'm afraid I'm not allowed to talk about the particular connectors I'm using under threat of banishment. LOL
But, if you Google "18650 solderless connectors" you'll find it pretty quick.
-Mike G
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#8
Lol too funny
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#9
Yeah. I know what these type of connectors are, and where they are from. Why did you mention a ban from the sky BTW?
The power of lithium ion is in our hands!
We'll show them what we're made of!
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#10
because he got them for free for a testing purpose or he was one of the first 'guinea pigs' Tongue
BlueSwordM likes this post
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Certified 18650 Cell Reclamation Technician

Please come join in general chit-chat and randomness at Discord Chat (channels: general, 3d-printing, linux&coding, 18650, humor, ...)
(this chat is not directly affiliated with SecondLifeStorage; VALID email req'd)
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