Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Drivers, Test-load, Power Supply, & Batteries



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 05-31-2011, 10:36 AM #1
strik3's Avatar
Class 1M Laser
 
Join Date: Apr 2011
Location: adelaide, Australia
Posts: 145
Rep Power: 7
strik3 will become famous soon enough
strik3 strik3 is offline
Class 1M Laser
strik3's Avatar
 
Join Date: Apr 2011
Location: adelaide, Australia
Posts: 145
Rep Power: 7
strik3 will become famous soon enough
Default protected or unprotected that is the question

is there a major difference in using protected or unprotected batteries in our builds?
i understand what the protection circuit does in the battery but are there any reasons to go with a particular battery?


__________________


1000mw+ 445nm Highly Polished HotLight (Lazeerer)
500mw+ 405 custom build (Lazeerer) - has gone LED
strik3 is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 05-31-2011, 11:06 AM #2
LaZeRz's Avatar
Class 3B Laser
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
LaZeRz LaZeRz is offline
Class 3B Laser
LaZeRz's Avatar
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
Default Re: protected or unprotected that is the question

Probably just for the added safety, im sure lots of people (including me) would prefer a battery rather then a bomb....Also, the thing with li-ion batteries is that if you try to extinguish a fire made from them with water, you will just intensify it since it releases gas when it comes in contact with water. pretty much the only way to extinguish it is by chucking sand or salt on it

although sometimes we have to sacrifice a bit of safety in some of our builds just so a certain battery can fit, I usually babysit even my protected cells, not to mention unprotected ones. Trust me, when you've had 2 bad situations with batteries you start to act like that

once I forgot a battery pack on my bed and it was shorting out for about 10 minutes..... I came into my room to find the smell of smoke and a just about melting battery on my bed, theres still a big mark there to remind me of the dangers when using batteries, I instantly picked up the battery pack and chucked it on the floor to dislodge the batteries from it and the left it to cool

the other time wasnt so dramatic but, I left some Nimh cells on a charger for about 6 hours because I forgot them there and when I came back they were hot enough to burn my skin, luckily they didnt explode
__________________
Stupid Australian Laser Laws.... Damn you customs

How to remove the PCB from protected cells

My Collection Of Beamshots and Laser Related pics!

Feel free to message me for any help/advice

Last edited by LaZeRz; 05-31-2011 at 11:12 AM.
LaZeRz is offline   Reply With Quote
Old 06-01-2011, 12:33 AM #3
LarryDFW's Avatar
Class 3R Laser
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 128
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
LarryDFW LarryDFW is offline
Class 3R Laser
LarryDFW's Avatar
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 128
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
Default Re: protected or unprotected that is the question

strik3;

I've used about 500 cells without protection circuit boards,
in RC trucks and Flashlights.

I have never had a cell even vent, much less catch on fire.

My experience has indicated ~10 times greater reliability . . .
with cells that have passed U.L. 1642 testing.

They are put thru a series of rigorous tests for safety, including shorts & punctures.

The only cells that have passed this testing are name brands like

Sanyo, LG, Panasonic, Samsung, and a few others.

IMO, the "chinese" protection circuit boards are of poor quality,
from the ones I have looked at.

LarryDFW
__________________
UV LED Lights F/S, 445nm, Blu-Rays, Red 1/2W, Green Focusables,
Link- Blu-Ray/445 Diode Test Current Levels for Long Life

Last edited by LarryDFW; 06-02-2011 at 12:57 AM.
LarryDFW is offline   Reply With Quote
Old 06-01-2011, 04:05 PM #4
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: protected or unprotected that is the question

protection circuits are good for DIY builds because who knows what's been shorted out inadvertently. You could turn the thing on, nothing would happen, and then if you don't turn it off it will either just sit there because of an open circuit, or it will destroy the cell because of a short circuit.

Depending on the cell, this could result in explosion, vent with flames, etc. Or there might just be some internal damage and reduced capacity with better-made cells.

Alternatively, some cells are capable of higher outputs than others, and the protection circuit would just limit these to lower current max. This isn't necessarily bad, since we rarely pull that much current with a laser diode anyways, but with a flashlight or something else that needs the power, unprotected cells is a risk that actually has a noticeable benefit.

If you are making a quality build and have a driver that actually cuts out at ~2.7V input, I'd say get some good OEM cells like those sanyos that Larry has. They'll have great capacity, they can supply whatever you need to pull from them, and are built better than generic cells.
BShanahan14rulz is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 05:37 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC