4c regulated UBH Magmods, nicad versus li-ion

Here they are.


I built these for a customer and will be shipping them day after this post.
Each light has a georges80 1 amp buck regulator and a TWOJ emitter.
4 nicads (5 volts) are for one and 3 18650's (11 volts) are for the other.
Either light can take either battery set.

Now which one was which in the photos below? :thinking:



Close up of the mounted emitters.


Lights with heads back on.


The 3X 18650 2200mah batteries are only getting 350 milliamps pulled from them.
2200mah divide by 350 = about 6+ hours runtime.
The 4X Nicads are getting 700 milliamps pulled out of them.
1400mah (crappy nicads) divided by 700ma = 2 hours
Both lights are ultimately getting 1 amp to the led.
Some efficiency was lost as the input voltage went up as you can see.
4 nimh 5000mah batteries should go about 7 hours easy.

Protected lithium ions are highly recommended for this to prevent overdischarge.
It only takes 1 remaining working lithium ion to make everything appear to be running ok while the other2 are getting permanantly damaged/destroyed from overdischarge.
Nicads, or nimhs should be ok and not get too terribly overdischarged with a setup like this.

Hi 3rd shift,

are you building anymore of these custom mags?
I would be interested in a 5D or 6D configuration.

I have a 6D georges80 1 amp regulated TWOJ Luxeon3 already built, tested and ready for work.
It is the bigger brother to the 4c units featured.
The 1st $105 takes it and includes USA shipping.
My paypal address is in my sigline below.

I also accept postal money orders.
Email me for that info if money order is preferred.

Does it come with a UCL? and how much to ship to Canada?

and also did you measure any Lux readings on the 6D?

Here's a complete review of the 6D.

http://ledmuseum.candlepower.us/second/maggmod.htm

Private message sent back to you.