Need help to build a new Li battery pack and driver for a Blackburn X3 helmet light

ozynigma

Newly Enlightened
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Jan 6, 2009
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Hi All,

This is my first post so please be nice to me.

I have two Blackburn X6 sets at home and one additional X3 battery.

I read this thread http://www.candlepowerforums.com/vb/showthread.php?t=214458 the other day and have ordered new SSC P4 LED's to upgrade my light units.

I am planning to keep running the same setup on my commuter, but with much higher light output. The setup is one narrow beam and one wide beam on the handlebars with an X6 battery strapped under the top tube.

In addition I have been running a narrow beam on the helmet with the X3 battery in my backpack. Before the upgrade I found the 3 lights at 85 lumen each were barely adequate on a fast bike path commute ride. After the upgrade the light output will be doubled, however I still like the idea of running the helmet light which I can point wherever I need.

What I would like to do is come up with a much lighter and smaller battery pack, possibly Li Ion to run in the backpack rather than the fairly heavy X3 NiMH battery.

I understand the control circuits for the Blackburn systems are in the battery not the light and they are connected by 3 pin connectors. I don't know if these are a standard connector that I can buy off the shelf and I am not sure what voltage the system runs at.

One simple option would be to buy a new Blackburn X4 with Li Ion battery and charger for about $90US (plus $25US freight to Australia). That way I get a whole new helmet setup with lighter Li Ion battery and another light to upgrade the LED in.

But as an alternative is there a fairly simple to purchase and put together package that would achieve the same purpose and be less expensive?

I would be looking at a couple of hours runtime for a 3 watt LED.

I can follow simple electrical diagrams and instructions and do basic soldering etc.

Thanks for any help and advice.
 
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