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



Laser Pointer Store

max current draw: 3x AAA vs 18650

DTR

Well-known member
LPF Site Supporter
Joined
Jun 24, 2010
Messages
5,609
Likes
954
Points
113
ive decided on using the 18650 from everyone here's comments... will a protected 18650 cell fit into my mxdl 3405 host?? i heard the protected cells are slightly longer than the unprotected ones
The protected cells fit great in both of mine.:beer:
 
Last edited:

Joined
Feb 9, 2008
Messages
273
Likes
0
Points
0
awesome, many thanks for the quick reply and pic :) i cant wait to put my build back together. unfortunately i fried my first 445nm diode last night... but ive got another one on the way now
 

chipdouglas

Well-known member
Joined
Dec 23, 2008
Messages
4,011
Likes
190
Points
63
if you dont mind a little rattle the 18650 should go right in to where a 3aaa cartridge was. i do it in mine. i also have to clip the tail spring. 10040s are a junky battery. the die alot even under normal load situations. so stressing them is nutz. good luck


michael
 

DTR

Well-known member
LPF Site Supporter
Joined
Jun 24, 2010
Messages
5,609
Likes
954
Points
113
if you dont mind a little rattle the 18650 should go right in to where a 3aaa cartridge was. i do it in mine. i also have to clip the tail spring. 10040s are a junky battery. the die alot even under normal load situations. so stressing them is nutz. good luck


michael
On both of mine it pinches the battery perfect. I can shake if very hard and no rattling. But if it is a concern you can use a rubber washer or rubber o-ring to center it.

 

chipdouglas

Well-known member
Joined
Dec 23, 2008
Messages
4,011
Likes
190
Points
63
mine isn't overly loose. but i am aware that it is loose. for me personally it is no biggie. now if i made lasers to sell, or bought this it would be unacceptable. but for me and my home made skillz it is cool.

michael
 

Sponge

New member
Joined
Jun 22, 2010
Messages
65
Likes
2
Points
0
Sorry for hijacking this thread, but would 2 x AA's be enough for a 445nm build at 600-700ma? Or would I be better off trying to run two 14500's in parallel?
 

DTR

Well-known member
LPF Site Supporter
Joined
Jun 24, 2010
Messages
5,609
Likes
954
Points
113
Sorry for hijacking this thread, but would 2 x AA's be enough for a 445nm build at 600-700ma? Or would I be better off trying to run two 14500's in parallel?
Even if you use the two AA in series you would only be getting like 3-3.4V and the mAh would give you terrible runtimes. 2 14500 in parallel would be better since they would give you a 4-4.2V charged. If setting them in parallel is difficult because of the host you could use a AA dummy battery and one 14500 with slightly lower runtimes. I have had a single 14500 running a 445 at 800mA without problems.
 

qumefox

New member
Joined
Mar 26, 2010
Messages
3,234
Likes
117
Points
0
There's no point in using a single 14500.. If you go that route, you might as well use a 18650.

Two AA's isn't nearly enough to run a 445 for long unless your running it just above threshold at 200-300ma.
 

DTR

Well-known member
LPF Site Supporter
Joined
Jun 24, 2010
Messages
5,609
Likes
954
Points
113
There's no point in using a single 14500.. If you go that route, you might as well use a 18650.

Two AA's isn't nearly enough to run a 445 for long unless your running it just above threshold at 200-300ma.
I was making an assumption that he already had a host that only fits AA's. If he has not chosen a host yet then by all means get one that fits a 18650.

The first 445 that I got was a 3405 MXDL from Daguin and was set to 800mA with a single 14500 battery. I did not have any issues. But I did decide to upgrade to an 18650 in the host when I put in a driver set to 1.5A.
 

Sponge

New member
Joined
Jun 22, 2010
Messages
65
Likes
2
Points
0
There's no point in using a single 14500.. If you go that route, you might as well use a 18650.

Two AA's isn't nearly enough to run a 445 for long unless your running it just above threshold at 200-300ma.
Host I'm using uses AA's.
 

jayrob

Well-known member
LPF Site Supporter
Joined
Sep 21, 2007
Messages
9,866
Likes
526
Points
113
Sorry for hijacking this thread, but would 2 x AA's be enough for a 445nm build at 600-700ma? Or would I be better off trying to run two 14500's in parallel?
I tested 2 X Energizer e2 lithium AA's in my phaser build at 650mA's with a 445... This build also uses about 135mA's current to run the sound board and LED 'armed' indicator light.

I figure the overall current draw is probably around an Amp or so...

The e2 lithium's are slightly higher voltage than most AA batteries. They have over 2000mAh's capacity...

With that in mind, it's probably about an hour (or near an hour) run time at that current... (the quality of your battery choice matters - I like e2 lithium's)
 




Top