How to get batteries out of Surefire L4

DaveH

DaveH

Joined
Dec 2, 1999
Messages
12,249
I just got one today, do I have to take
the top off too and poke them out with a stick?
 
I THINK the batteries are supposed to go in and out through the bezel end of the light...

-John
 
Originally posted by blastjv
I THINK the batteries are supposed to go in and out through the bezel end of the light...

-John
Click to expand...

They should come out the tailcap if it is anything like my A2. Try shaking it a bit. They fit in there very snugly!
 
You should be able to get them out with a 16 oz hammer. Or, maybe you've just got the wrong end open.

Either way, you should be able to get those batteries out. :)

-- Rob
 
Hey Dave...

Send it over with a fresh set of batts and i'll put them in for you..

:)

ttyle

Eric...
 
Since it's the E2 body really, you can take the batteries out the bezel end only. They should fall out freely though. If they are stuck, there might be something wrong...
 
Take a torch to it
MIB.gif
 
On that note, I used my L4 a few nights ago to work on some rats nest wiring behind the bedroom entertainment unit and damn if that thing didn't get almost too hot to hang on to.

In short bursts, it's not noticeable, but keep that bad boy on for more than 2-3 minutes and the whole body gets screaming hot, not entirely too hot to handle but not exactly comfortable, either.

It would likely make a really sweet handwarmer in a pinch though.
 
Put it in the freezer for 10 minutes and they should fall right out from the tailcap or bezel side.

Another way is to give a light shot of WD-40 and they will fall right out.

Daniel
 
xsrdx,

It is normal for the L4 to get warm. Actually, if you held on to it, your body would serve as a larger heat-sink and help keep the body of the light comfortable to handle.

The bezel, however, can still get uncomfortably hot to the touch.

The L4 is designed to be a "tactical light" by SureFire's own standards -- on/off cycles -- not a constant-on tool.

:)

Allen
aka DumboRAT
 
It is normal for the L4 to get warm
Click to expand...
I had heard that, but it still surprised me that it got so hot so fast. I have a slew of SF Incan's, from E2e to M3, and none of them get nearly as hot as the Lux LED in the L4, as least not in the light body area.

I was not expecting it based on my experience with "standard" LED lights, but of course the L4 output is totally superior also.

I could still hold it, but I damn sure knew it was there!
 
Originally posted by xsrdx
I had heard that, but it still surprised me that it got so hot so fast. I have a slew of SF Incan's, from E2e to M3, and none of them get nearly as hot as the Lux LED in the L4, as least not in the light body area.

I was not expecting it based on my experience with "standard" LED lights, but of course the L4 output is totally superior also.
Click to expand...

:)

Yup --

The Luxeon Stars do generate quite a bit of heat -- not "forward heat" as with incandescents, but rather, that the emitters must themselves be heat-sinked.

This is why you see such a high focus on heat sink design with both production and custom lights using the LS LEDs.

On models like the new ARC 4+, there is such a difference in performance between holding the light normally (and thus using your body as a giant heat-sink and leaving it free-standing that it's actually noticeable to naked-eye observation.

:)

Allen
aka DumboRAT
 
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