RSSHOW TO - Revive Nicad batteries by zapping with a welder
One of my favorite makers, Tim, has a good how-to on bringing some old ni-cads back to life using a welder - this is one of those that you shouldn't do unless you know what you're doing, k?
"Nicad batteries often die in such a way that they won't take a charge and have zero voltage. This usually means they're shorted out by crystal dendrite growth.
Here's a method of bringing them back to life by zapping those shorted crystal dendrites away with too much current and/or voltage. We'll use a welder as a power source. You could also use a car battery, a DC powersupply, or almost anything with some voltage. Charged-up capacitors are popular for this because you can get a very fast pulse out of them and still limit the power. it's a lot safer that way..." - Link.
Posted by Phillip Torrone |
Dec 13, 2006 01:00 PM
DIY Projects, Electronics |
Permalink
| Comments (0)
Recent Entries
- HOW TO - build a water mortar
- Jake's steamcar project, dashboard redo
- Build your own water quality tester
- MAKE @ Yahoo! Buzz
- Made in Japan Vol. 3
- Super Breakout version allows for competitive or collaborative gaming
- How DIYers just might revive American innovation
- Light-Field camera makes blurry images a thing of the past
- Make a pizza box solar oven
- DIY Security system calls your phone
Comments
Oldest comments listed first.
Subscribe to MAKE Magazine!
Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.
$34.95 / 1 year
(4 Quarterly Issues)
Features and more @ MAKE!
MAKE @ The NYC Toy Fair 2008 - Covering DIY!HOW TO - Build the arms of assistance.
MADE in Japan - Part I.
MADE in Japan - Part II.
MADE in Japan - Part III.
Make store - Blinky bug kit - Blink!
Make store - Loud Objects Noise Toy Kit
Makers - MAKE Flickr pool contest. Win cool stuff!
Makers - Join the MAKE Facebook page - Meet other makers.
MAKE on Twitter - Tweet! Tweet!
What you're reading in MAKE - Data!
Add MAKE to your RSS reader - Real simple.
Why advertise on MAKE?
Read what folks are saying about us!
Click here to advertise on MAKE!
Phillip Torrone
Senior Editor
Tel: 707-827-7311
Gareth Branwyn
Robot Maker
Jonah Brucker-Cohen
Researcher
Natalie Zee Drieu
Senior Editor
CRAFT
Becky Stern
Culture jammer
Collin Cunningham
Sound Maker
Marc de Vinck
CNC Maker
Current Podcast
AHAB High Altitude Ballooning - Best of Weekend Projects
mp4|mov|hd|3gp|3g2|itunes This week on Best of Weekend Projects, we look back at part two of the AHAB (High Altitude Balloon Adventure). In this epic Bre & Co. travel to Eastern Washington to launch a GPS and camera enabled balloon...
More...
