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High power led bike light (900 lumen aprox)

last photo ←

I've recently built this power led for mi bike. These are the parts I used:

- Cree XM-L T6 led. About 900 lm at 2800mA (in theory).
- 5-mode 2800 mA led driver. Switches between 10%, 50%, 100%, fast strobe and SOS.
- 70x10 mm aluminium heatsink.
- 14 degree lens.
- 20mm star PCB
- Sekisui 21 mm thermal sticker

For the battery pack:
- 3000mAh 18650 battery
- 18650 battery holder
- old cell phone cover whith clip

Other parts
- switch that I found at home
- handlebar mount from old light
- 2 plastic tops
- adhesive filler
- cables that support high current
- RCA connectors

I found some ideas before building this light and a lot of information about drivers
and leds here: http://www.forolinternasled.com/

The cost of everything is about 60 € ~ 84 $

My led came soldered on the PCB, so i started sticking the PCB to the heatsink.
Then I soldered the + and - cables from the driver on the led PCB (the PCB symbols help you)
Between the battery and the driver is a mode switch.
I glued every part so it's water resistant and wrapped the battery pack in a bag.

4 comments

Feb 22, 2012. 3:12 PMAdvar says:

Jeez...
"Gosh honey, the Sun's comming up. No, wait.."
Can' t wait to see the step- by- steps! :)

Sep 7, 2011. 10:19 AM

zazenergy says:

This is really cool! I also agree with etlerd, this would be AWESOME as a step by step. Let me know if you need help with that!

Sep 8, 2011. 8:15 AMrpascual arribas (author) says:

My problem is that I decided to post it here after I had everything finished :S.
I'll try to draw something for the steps with some pictures of each part.

Sep 6, 2011. 7:19 PMetlerd says:

Ive been seeing a lot of these one-step instructables. If you want to make a good instructable, best to break construction down into manageable steps, using lots of pictures with explanations for each step, mentioning how you used each part mentioned in your parts list, etc.