Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 07-16-2010, 05:07 PM   #31 (permalink)
The $500 Electric Car
vpoppv's Avatar
Join Date: Aug 2009
Location: Cushing,Oklahoma
Posts: 430
Thanks: 6
Thanked 26 Times in 20 Posts
Some more preliminary information:

Out of the 18 "bad" laptop battery packs:

3 packs had ALL the batteries showing above 3v.

2 packs showed ALL the batteries dead, but when the batteries were separated, they began building voltage.

38 batteries total showed zero voltage out of 131.

From the little information I have gathered, I suspect that what is killing these packs is not the batteries but the management system.

I'm too much of a newb to know how the $4 charger works, but it will only charge a battery that has decent voltage to begin with. I am able to get some batteries to hold voltage by starting to charge one battery that is "chargeable" and inserting a "non-charging" battery along with it. After a couple minutes of charging, a "dead" battery seems to hold above 2v for a while. Time will tell if they can ever be used again. So far, I have only seen 2 batteries that flat out won't take a charge, even when thrown in with a battery that WILL hold a charge. Of course, none of this really tells me the capacity of a battery. I was thinking of buying a CREE flashlight that uses these batteries and putting one in, then record the time it takes to discharge. That could take forever. Is there any form of cheap "capacity" meter out there??

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
What would you do with a small collection of 18650 lithium cells? MetroMPG Fossil Fuel Free 17 12-25-2009 02:20 AM
Lithium El-ectric Camino bennelson Fossil Fuel Free 3 09-09-2009 05:42 PM
Game Changer X The Current Lithium DIMS Fossil Fuel Free 1 06-30-2009 12:00 AM
Why electric cars are WORSE than gasoline! MazdaMatt Fossil Fuel Free 23 03-31-2009 01:47 PM
"Sonata" Lithium Ion battery NeilBlanchard General Efficiency Discussion 0 09-08-2008 03:19 PM

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com