ROP, Eneloop Amp draw?

choaticwhisper

Enlightened
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Nov 11, 2007
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Ive heard eneloop are a good balance of power to runtime but I didn't use all eneloop batteries may amp draw at the tail cap is only about 2.03Amps. ROP-L bulb. According to the "Destructive Incan Bulb Tests" thread that's only around 600 lumens.
I used 4 eneloops and 3 kodak batteries. Would I really benefit from all eneloops, Could someone measure theirs?

I also tried it with 2 unprotected(I know not a good idea but only for a few mins) 18650's and if I remember I was only getting around 2 amps draw for them also. I think that might be the limit for those batteries though.
 
First, please use all the same cells, at least to insure balance, and cell life.
Second, you are probably getting resistance losses at the switch and tailcap. Do a search for Mag resistance fix.
2 Amps is right in the ballpark anyway, now try the high bulb!
 
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Thanks, I went and got some duraloops, amp draw one low bulb is 2.13 so looks like the resistance fix should help with that.
Soon as the voltage comes down some Ill try the high. I think I was checking the high bulb when I got 2.03 it was 1 something with the low.

New matching cells helped alot.
Thanks.
 
Well Done with the switch fixand the tailcap wire. Still only getting 2.13amps at the tail cap. 8.8v Low Bulb.

Because of new batteries?
I guess its as good as its getting for now.
 
Well Done with the switch fixand the tailcap wire. Still only getting 2.13amps at the tail cap. 8.8v Low Bulb.

Because of new batteries?
I guess its as good as its getting for now.

So, how is the output? I use a ROP Low with no resistance fixes and am very happy with it. Lowering the resistance would increase the voltage to the bulb and therefore reduce bulb life, I don't feel the need for that TBH. I get enough light from my ROP Low and the colour is good, it is my favourite 'everyday use' incan.
 
I agree with KiwiMark, the ROP low is perfectly suitable without any resistance fixes and runs great on just about any ~7.2-7.4V power source of either 2x Li-Ion or 6x Nickel chemistry rechargeable cells. About 3 times as bright as a 6D mag and generates great throw, handily competes against the best LEDs and still has reasonable runtime on the table.
 
For the resistance fix, I didnt have any solder wick so I used twisted stand wire, Like I said didnt see much differance after that. The new matching batteries helped the most.
Output is pretty good, I would say quiet amazing for a light its size. I guess I was just thinking it was going to be brighter. I seen some beamshots comparing it to a mag85 and I didnt see much difference, maybe double them lumens.

I havent played with it much, So the voltage hasnt came down enough for the high bulb.

Im really just more of a LED guy. I had to see what all the fuss was about.
 
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