Fenix E20 heats up really fast
- Thread starter grunt12g
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berry580
Flashlight Enthusiast
its a common "feature" for all "high powered" leds, welcome. =)
Dark Laser
Newly Enlightened
Well..."hot" is not a good thing for ~1W of power. Check the batteries - I suspect that there might be a failure, since the whole body heats up. It never occurred to my E20, although it gets slightly warm after a really long period.
Maybe the batteries are discharged differently or have too different capacity.
EDIT: or maybe the ambient temperature is too high...but look after the batteries just to be sure.
Maybe the batteries are discharged differently or have too different capacity.
EDIT: or maybe the ambient temperature is too high...but look after the batteries just to be sure.
dwminer
Enlightened
+1
You need a constant flow of air around the flashlight to have any cooling or a layer of warm air forms
around the it.
Last edited:
There seems to be a bit of a contradiction between the thread title and it's content. The title says 'heats up very fast' but the OP says 'whenever I leave it on for an extended period of time'. Most of my lights get quite hot at 100+ lumens when left, for example, stood in candle mode with nowhere but still air for the heat to escape to. If I'm holding them it's not so noticeable, but when left tail standing or just resting on a table they get noticably hotter.
Ideally the whole body should be heating up, rather than all the heat being confined to just the head. If it's too hot to pick up, then I'd say there's likely a problem. If it's functioning okay and just gets hot when left unattended in a room, that sounds normal to me. How hot does it get?
By all means do check the batteries, or see if it's the same with a different set. Better safe than sorry.
Ideally the whole body should be heating up, rather than all the heat being confined to just the head. If it's too hot to pick up, then I'd say there's likely a problem. If it's functioning okay and just gets hot when left unattended in a room, that sounds normal to me. How hot does it get?
By all means do check the batteries, or see if it's the same with a different set. Better safe than sorry.
Jash
Flashlight Enthusiast
Hot or very warm?
As has been mentioned, lights left on alone will get quite warm, but they are designed in mind with you holding them while using them and as such your hand draws away the heat (nice in winter, not in summer).
My E20 does get rather warm when left on for more than 10 minutes, but it's not what I would call hot. To me if it is hot that means you can't hold onto it.
As has been mentioned, lights left on alone will get quite warm, but they are designed in mind with you holding them while using them and as such your hand draws away the heat (nice in winter, not in summer).
My E20 does get rather warm when left on for more than 10 minutes, but it's not what I would call hot. To me if it is hot that means you can't hold onto it.
I would say something is wrong. I have a Romisen RC-N3 with an R4 and it gets only very slightly warm to the touch and only around the head. It was that way even when I did a run time test for 3 hours on high. It is a similar sized 2xAA if you don't know.
Dark Laser
Newly Enlightened
The emitter should still be the same (XR-E Q2).
recDNA
Flashaholic
- Joined
- Jun 2, 2009
- Messages
- 8,762
OK, I thought Fenix might have updated to the R2. Too bad they didn't actually. I like my E20 very much. ALWAYS works, ALWAYS.
B0wz3r
Flashlight Enthusiast
You may be having a problem with the batteries you're using. I've found that all my LED lights make more or less heat depending on what I feed them.
With NiMH rechargeables, my E20 makes more heat over a given run time than when using L91 primaries. Try different cells and experiment with it. If your heat problems with it don't abate on a different set of cells, then you might want to exchange it for a new unit.
Of all my lights, my E20 still sees a lot of use as it's simple, has a long run time, and has been a very sturdy light for me. Still one of my favorite lights.
(I use my E20 on a TwoFish bike block on my bike helmet with L91s because I get a better run time and slightly more power than one of my Quark AA^2's. The Quark on turbo is definitely more output, but less than half the run time. I prefer the L91's because they're less than half the weight of NiMH rechargeables, and when it's on my head, that weight makes a difference.)
With NiMH rechargeables, my E20 makes more heat over a given run time than when using L91 primaries. Try different cells and experiment with it. If your heat problems with it don't abate on a different set of cells, then you might want to exchange it for a new unit.
Of all my lights, my E20 still sees a lot of use as it's simple, has a long run time, and has been a very sturdy light for me. Still one of my favorite lights.
(I use my E20 on a TwoFish bike block on my bike helmet with L91s because I get a better run time and slightly more power than one of my Quark AA^2's. The Quark on turbo is definitely more output, but less than half the run time. I prefer the L91's because they're less than half the weight of NiMH rechargeables, and when it's on my head, that weight makes a difference.)
recDNA
Flashaholic
- Joined
- Jun 2, 2009
- Messages
- 8,762
Interesting. I use L91's also. Lighter, higher output, longer runtime, and apparently less heat.
