Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Any of you guys have any good flashlights?

randomlugia

randomlugia

0
Joined
Sep 4, 2008
Messages
1,807
Points
0
I got a 1W 3AAA flashlight from DX, took it apart, and hooked it up the a 9-volt. It was amazing!!! Not much throw with the reflector, but you could see the light from a LONG way away (100 someting feet). ;D It got so hot though, in about ten seconds it was hot enought to burn your hand. Though it did tolerate the heat very well. I left it on for an hour, and it was almost to hot to touch, but it still worked perfectly. :D
 





WizardKing

WizardKing

0
Joined
Nov 4, 2008
Messages
63
Points
0
To add to Kenom's comments (above)
After 2 driver circuits failed (one killed a P7, the other kept switching modes)
I built my own driver circuit using a couple of low dropout regulators. Works very well but for only 30 minutes or so , as correctly stated.

Luckily I have about 24 18650 li-ions ;)



For those that may not have known,
18650 li-ions are fairly easy to get for FREE !

The majority of laptops have these fitted. Keep your ears open for anyone getting new batteries or laptops that have no use for the old ones.

I've almost always found that a couple of cells won't take a charge but the rest tend to work :)
 
daguin

daguin

0
Joined
Mar 29, 2008
Messages
15,989
Points
113
jamilm9 said:
This is coming with the the flashlight
http://www.dealextreme.com/details.dx/sku.5776
do they come percharged.
Whats the difference between a 18650 and a 14500. Could i use a 14500 in the flashlight.
Click to expand...


The numbers tell you the size of the battery.  The first two numbers are the diameter and the last three numbers are the length.  An 18650 is 18mm in diameter and 65.0mm in length.  A 14500 is 14mm in diameter and 50mm in length.  In order to use the 14500 in the flashlight you would have to "shim" and fill the extra space in the tube.  Unfortunately, this does NOT take any "protection" circuits into account.  Sometimes the protection circuit and the heat shrinking make the battery too wide.

Peace,
dave
 
daguin

daguin

0
Joined
Mar 29, 2008
Messages
15,989
Points
113
robjdixon said:
What is the 0 for then?
Click to expand...


650 = 65.0

500 = 50.0

I missed one in the posting

Sorry. I rarely include .0's ;)

Peace,
dave
 
jamilm9

jamilm9

0
Joined
Jan 12, 2008
Messages
1,864
Points
0
daguin said:
[quote author=jamilm9 link=1230868617/20#20 date=1230996732]This is coming with the the flashlight
http://www.dealextreme.com/details.dx/sku.5776
do they come percharged.
Whats the difference between a 18650 and a 14500. Could i use a 14500 in the flashlight.
Click to expand...


The numbers tell you the size of the battery.  The first two numbers are the diameter and the last three numbers are the length.  An 18650 is 18mm in diameter and 65.0mm in length.  A 14500 is 14mm in diameter and 50mm in length.  In order to use the 14500 in the flashlight you would have to "shim" and fill the extra space in the tube.  Unfortunately, this does NOT take any "protection" circuits into account.  Sometimes the protection circuit and the heat shrinking make the battery too wide.

Peace,
dave[/quote]
Thanks for the fun fact. Do they come precharged?
 
brtaman

brtaman

0
Joined
Jun 12, 2008
Messages
1,199
Points
48
daguin said:
[quote author=robjdixon link=1230868617/20#23 date=1231001879]What is the 0 for then?
Click to expand...


650 = 65.0

500 = 50.0

I missed one in the posting

Sorry. I rarely include .0's ;)

Peace,
dave[/quote]


Actually daguin, correct me if I am wrong, doesn't the 0 at the end signify the shape of the battery. 0 as in cylindrical.


I have no flashlight worth mentioning. But I am looking at a SSC P7 based light of DX, anyone got one that they would recommend?


thanks
brtaman
 
daguin

daguin

0
Joined
Mar 29, 2008
Messages
15,989
Points
113
brtaman said:
Actually daguin, correct me if I am wrong, doesn't the 0 at the end signify the shape of the battery. 0 as in cylindrical.
I have no flashlight worth mentioning. But I am looking at a SSC P7 based light of DX, anyone got one that they would recommend?
thanks
brtaman
Click to expand...

You may be right.  The ".0" information MIGHT be a simple explanation that I read somewhere, because thinking about it in response to your statement, I cannot remember where I learned it   :-/

Bad form for a professor   :-[

I will do some research to find out for sure.  I have no reason to doubt your word.  I just need independent verification now that I realize that I may be (probably am) wrong.  Research has ruined my social life ;)

Peace,
dave

[highlight]**EDIT** [/highlight] Follow-up -- Although I cannot yet find any other "designations" for shape, there are more sites identifying the final "0" in the number as designating the cylindrical shape of the battery.  Good call brtaman  [smiley=thumbsup.gif] +1
 
brtaman

brtaman

0
Joined
Jun 12, 2008
Messages
1,199
Points
48
I also thought the .0 explanation was correct for a while. Then I bought some 17670 batteries of DX of which one fits perfectly into a sonar II while the other is at least .5mm wider in diameter and has no chance of fitting, same goes for pretty much all batteries I bought of DX. Thats what got me thinking that the cylindrical designation explanation must be the correct one?


Thanks :)
brtaman
 
MarioMaster

MarioMaster

0
Joined
Jul 27, 2007
Messages
3,642
Points
63
I have a SpiderFire Cree R2 based flashlight from DX, best flashlight I have. Runs on one 18650 and has high/low brightness modes.
 
Cyparagon

Cyparagon

0
Joined
Sep 12, 2007
Messages
9,399
Points
113
I've got a few smaller DX lights and an aurora P7 (almost as bright as my headlights!). Nothing over $50 though.

FireMyLaser said:
The current is a bit low for 1W rated, only 280mA with [an 18650]
Click to expand...
280mA times 3.7V is 1.036W.

WizardKing said:
For those that may not have known,
18650 li-ions are fairly easy to get for FREE !

The majority of laptops have these fitted. Keep your ears open for anyone getting new batteries or laptops that have no use for the old ones.

I've almost always found that a couple of cells won't take a charge but the rest tend to work  :)
Click to expand...

This man speaks the truth. I snatched 6 of the 9 that were present in an otherwise dead laptop battery.
 
You must log in or register to reply here.




Top