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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 07-19-2010, 10:27 PM #1
villalaser's Avatar
Class 1 Laser
 
Join Date: Nov 2009
Location: California
Posts: 94
Rep Power: 14
villalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to behold
villalaser villalaser is offline
Class 1 Laser
villalaser's Avatar
 
Join Date: Nov 2009
Location: California
Posts: 94
Rep Power: 14
villalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to beholdvillalaser is a splendid one to behold
Default Dead non protected battery? dont toss it, jump start it!

Hey all I have a 3.2v non protected battery that was discharged way to far and sat for a long time. It is now only at .51v and my charger whont charge it or evin seem to recognise that the battery is there.
I did a quick seached around and could not find a fix, so I thought I would share how I fix a dead battery.

So back when I was more into R/C cars. Id occasionally forget to unhook a battery and or turn the car off, and end up with a battery that is so dead it wouldn't charge the next time i whent to use it.
So instead of buying a new expensive battery, I tryed difrent ways to jump start it to a voltage that will make the charger see it.


I came up with somthing like this, but with more baterry's in series for the higher volt battery packs. you need a higher voltage that the battery you are trying to jump start.


This works with NiMH & LiFePO for shure, I have not tried the other battery types so use Caution if you try this on different battery's.

Wach the battery like a hawk when it is charging, makeing shure it dose not get hot. I charged a battery of the same typ that has not died to compare the heat from the two.

But as you can see from the picks I have a battery that will now take a charge.
Attached Thumbnails
Dead non protected battery? dont toss it, jump start it!-s7301010.jpg   Dead non protected battery? dont toss it, jump start it!-s7301011.jpg   Dead non protected battery? dont toss it, jump start it!-s7301013.jpg   Dead non protected battery? dont toss it, jump start it!-s7301014.jpg   Dead non protected battery? dont toss it, jump start it!-howtojumpstartabattery.png  



villalaser is offline   Reply With Quote







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







Old 07-20-2010, 11:03 AM #2
pHeneX's Avatar
Class 1M Laser
 
Join Date: Feb 2010
Location: Germany
Posts: 162
Rep Power: 12
pHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of light
Send a message via ICQ to pHeneX
pHeneX pHeneX is offline
Class 1M Laser
pHeneX's Avatar
 
Join Date: Feb 2010
Location: Germany
Posts: 162
Rep Power: 12
pHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of lightpHeneX is a glorious beacon of light
Send a message via ICQ to pHeneX
Default Re: Dead non protected battery? dont toss it, jump start it!

Your battery gonna have most likely less capacity if it was deep discharged..
They might also explode, so if you do that always charge it outside.
I know someone who lost a finger due to a exploding LiPo cell.
Rather take protected batteries than resurrecting a dead one..
Best of all: avoid deep discharge by checking your batteries each week
__________________

Last edited by pHeneX; 07-20-2010 at 11:05 AM.
pHeneX is offline   Reply With Quote
Old 07-20-2010, 11:21 AM #3
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24618
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24618
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: Dead non protected battery? dont toss it, jump start it!

I actually use a really slow trickle charging method for resurrecting dead unprotected li-ion batteries. Also I have them in a large metal box while doing so just to be safe.
__________________

Razako is online now   Reply With Quote
Old 07-27-2010, 02:18 PM #4
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Dead non protected battery? dont toss it, jump start it!

I've used something similar before, and I can say it works sometimes.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 07-27-2010, 03:47 PM #5
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: Dead non protected battery? dont toss it, jump start it!

Be careful. With NiMH and LiFePO4 not as bad, but with standard Li-Co rechargables is dangerous.
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 02:11 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