I hve an A2 and an E2E. I love the regulated output of the A2 but I love the form factor of the E2E. Is there any way to get regulated-like incan output out of the E2E? I'm wondering if a rechargeable option will give flat-like output.
Regulated-like output for E2E?
- Thread starter tsl
- Start date
Help Support Candle Power Flashlight Forum
NotRegulated
Flashlight Enthusiast
- Joined
- Nov 2, 2004
- Messages
- 1,358
You could get regulated-like output from these:
If your E2e will fit a 17670 check out the Lumen Factory HO or EO-E1R.
You could use 2 3.7 v R123's but would need to buy the HO or EO-E2R.
Usually, the behavior of the li-ion rechargeables is to give you a fairly flat output then dim quickly then die or shut off if the cells are protected.
http://www.lumensfactory.com/cart.php?cat_id=5
I agree with NotRegulated, the output of incans on lithium ion cells is fairly flat over the duration of the runtime. My experience with the lithium ion IMR cells has been similar. Of course I still love my A2. I wish Surefire had made a 3 cell version!
Awesome replies. Thanks!
I have an older E2E with a twisty tailcap, lightly crenelated bezel, and the round body with all the lettering on one side. Maybe the transition from the old square body to today's round body?
Do you know if it will fit 17670's? Any way for me to figure it out without buying one?
Illum
Flashaholic
Can you provide us as to when you bought your E2e?
older batches can accommodate 17670s [protected or unprotected] unmodded. Newer batches are narrower towards the tail so 17670s will feel exceptionally snug after ~80% of the cell is inserted. A simple fix is by wrapping sandpaper around a wooden dowel that has a diameter same or smaller than cr123As and sand by rotating it around a bit. It will grind the chemkote layer off but it will not affect the performance. :thumbsup:
its only a fraction of a mm at times so I'd consider getting an 17670 to try it out, if its just slightly snug, you can peel the AW label off. the black shrink wrap designates itself as a protected cell in a group of unprotected ones [normally blue shrinkwrap
]Any why is that if I may so inquire? :thinking:
mdocod
Flashaholic
The discharge curve of a li-ion isn't really any flatter than a CR123 at lower drain rates of the E series lamps. If the performance on CR123s isn't "flat enough" then I don't see how going to li-ion cells is going satisfy.
I bought my E2E from addicted2lite from this thread:
http://www.cpfmarketplace.com/mp/showthread.php?t=179498
I can always ask him.
mdocod said:
Hmmm ... that would be a shame. I thought li-ions didn't sag as much as CR123s under load. So, I thought the lamp output wouldn't dim as much over time.
mdocod
Flashaholic
discharge "curves" and voltage sag are 2 different things. Yes li-ion has less "sag," which is the difference between the open circuit and running voltage under a load.
Head on over to the batteries/electronics section of the forum; visit the threads of interest, and compare the li-ion shootout to the CR123 shootout done by silverfox. I think you'll see that at lower drain rates, li-ion doesn't really have any advantage in the "discharge curve" department.
-Eric
Higher output and longer runtime. Lamps that run at 6.5V are better than lamps than run at 4.0V.
mdocod, higher voltage is what makes the incan lamps brighter. Higher voltage under load is what lithium ion batteries produce, compared to primaries. You have me all confused, because incan lamps see the load voltage on their filaments.
In general, it's been my experience than lamps are brightest on fresh primaries, brighter even than freshly charged lithium ions. But after that first twenty seconds to first minute or so, the lithium ion batteries take over in brightness for the rest of the run.
In general, it's been my experience than lamps are brightest on fresh primaries, brighter even than freshly charged lithium ions. But after that first twenty seconds to first minute or so, the lithium ion batteries take over in brightness for the rest of the run.
Youfoundnemo
Enlightened
because the Li ions are mostlikely overdriving the bulb, think about it 2 primaries is 6v 2X li ions is 7.4-8.4 big diffrence, I know that I tried running a MN01 on a rechargable and it went 
higher voltage doesnt always mean brighter, 9V .5A draw will be dimmer than 6v 1.2A draw
higher voltage doesnt always mean brighter, 9V .5A draw will be dimmer than 6v 1.2A draw
mdocod
Flashaholic
TSL is asking for a performance that replicates that of a regulated light. Brighter on average through a discharge doesn't translate to "regulated" output behavior.
Li-Ion cells have a more gradual steady decline in output through their discharge, which makes it harder to "see" a sudden change. Like you say, there is about 10-40 seconds off the line where CR123s run really hot on most lamps, and then suddenly settle down to a more moderate output.
-Eric
In my experience between the two, I would say yes.
Outdoors Fanatic
Flashlight Enthusiast
I would definitely agree with that if we were talking about E1e's MN01 levels of output... But running a higher output LA on a 17670 will give an slightly flatter discharge curve and better runtime than the same bulb off of a CR123 primaries.
You can see this looking at the Streamlight Strion's runtime graph at Flashlight Reviews and compare it with the P60 lamp running on primaries. Both have basically the same total lumens on fresh cells, however, the Strion's output stays whiter and brighter for longer time.
The EO-E1R is in the same output class of the P60 and slightly above the MN03.
So considering all that, I'd say that if he wants MN03+ output with a flatter discharge curve, then the EO-E1R on a 17670 is a superior setup than the stock lamp + primaries.
Which one is flatter? The P60/MN03 on primaries, or the Strion lamp on a single li-ion? Check it out:
http://www.flashlightreviews.com/reviews/surefire_6p.htm
http://www.flashlightreviews.com/reviews/surefire_e1e.htm
http://www.flashlightreviews.com/reviews/streamlight_strion.htm
Last edited:
