Picture of Rechargeable LED Safety Glasses
Here's how to mash-up a digital camera rechargeable battery with LED safety glasses.

Awhile back, I bought a pair of those clip on LED lights that attach to the arms of glasses. At first, they worked great. But after a few hours of use, the button batteries slowly died to a point that they became useless. Continually replacing button batteries, (mine had three per each light) wasn't very economical.

I had an old Canon S100 digital camera in my junk pile, (the LCD was broken). I also kept the battery charger and two Li-ion 3.6V batteries. I figured I could use the Li-ion batteries to power the LEDs.

Hot glue gun
Wire cutters
Soldering iron
Tin snips
Hand punch

Safety glasses
Clip-on LED lights - Electronic Goldmine - G16248 - $2.95
Tic Tac container
26awg wire
Rechargeable battery
Battery charger
Double sided tape
Brass sheet
3/8" dowel
1/8" foam rubber
Can of Brain Toniq

Step 1: Make Battery Plug (optional)

Make a "plug" that fits inside the LED light's battery compartment. The plug provides electrical connection to the contacts inside the battery compartment. Using a plug gives you the option of reverting back to the button batteries if you change your mind. For a more permanent configuration, this step can be skipped by soldering the lead wires directly to the battery contact tabs inside the lights.

Punch (using a hand punch) or cut (using tin sips) some round contact plates from the thin brass sheet. The contact plates need to be about the same diameter of the button batteries. Two contact plates are needed for each plug - positive and negative. Make sure to sand off the finish from the brass plate first.

Next, cut off about 3/8 inch length of 3/8 inch dia. dowel. Cut two pieces, one for each light. File a shallow notch on the top and bottom of the dowel plug. This allows room for the lead wires.

Using 26awg stranded wire, cut off two sets of leads, one for the left light and one for the right. The left leads should be about 15 inches long, the right about 6 inches long. Strip then solder these leads to the contact plates.

Hot glue a pair of positive and negative contact plates to ends of the dowels. Twist the leads together and heat shrink the plug for a neater appearance.

Using a Dremel, make a small notch in the light's battery compartment door. This allows access for the wire leads from the plug.
jpoyner6 years ago
Do you have a link or a brand name for the LED clips that you are using. I have found a few different types, but I like the shape of the ones you are using.
garagemonkeysan (author)  jpoyner6 years ago
Hi jpoyner - I just found these LED light clips. You can buy them at Electronics Goldmine. They're online and go for $2.49 US ea. Later! : )
garagemonkeysan (author)  jpoyner6 years ago
Great question! But sorry, there is no name or model on these lights. I've had these a long time and don't remember where I bought them. I did a quick search and couldn't find them either. I do recommend buying ones that swivel. I find myself adjusting them all the time. Sorry I couldn't be more help.
N1CK4ND06 years ago
Oh cool! Another project that puts a tic-tac case to use! Thanks.
garagemonkeysan (author)  N1CK4ND06 years ago
Thanks for the comment! :)
fmiller016 years ago
I suggest adding a couple of wraps of white tapearound the bridge of the glasses to: 1) support the wire running across it to the LED on the other side. 2) give the glasses a true geek look!
garagemonkeysan (author)  fmiller016 years ago
Excellent suggestion! : )
deqwer6 years ago
I think you can focus the LED light.
driesyo6 years ago
tic tac is sold in europe to
garagemonkeysan (author)  driesyo6 years ago
Thanks for the info! : )
slayercr236 years ago
Is it heavy on the one side?
garagemonkeysan (author)  slayercr236 years ago
It's pretty balanced. : )
FaqMan6 years ago
Nice ible this would help in the lab alot also when you have a power shortage.
garagemonkeysan (author)  FaqMan6 years ago
Thanks for the comment. Yes, no matter how many lights I put in my shop, it's never enough. I use these all the time. : - )
andrewbaker6 years ago
this brings the word geek to a whole new level OF AWESOME
garagemonkeysan (author)  andrewbaker6 years ago
No doubt! : )
Our old little Konica Minolta digital cam we bought in about 97 (surprisingly still works) we only had to change the batteries 4 or 5 times.
garagemonkeysan (author)  Yerboogieman6 years ago
Thanks for the comment. I just realized you don't need an old/unused digital camera for this build, just a secondary battery for your existing camera. Doh! : )
Clanky6 years ago
I imagine the glasses would be tilting to one side. Is the battery heavy enough to do that? If it does, I suggest making a "band" that starts at the end of one arm, goes around your head, and attaches on to the other arm. Then put the battery there so it doesn't force the glasses to tilt. In any case, good Instructable.
or a counter weight
garagemonkeysan (author)  agdollison6 years ago
Thanks for the suggestions! The battery is pretty light so the balance is pretty good. : )
chinchymork6 years ago
Wow Those look really cool, a little bit and bulky though, but other wise..Good job!!!
garagemonkeysan (author)  chinchymork6 years ago
Thank you. Yeah, they're like from the movie, "Honey, I Shrunk the Kids" but they are very useful! : )