Solved

casio np-20 battery not charging

Posted on 2007-11-27
5
3,727 Views
Last Modified: 2013-12-11
Hi,

I have several casio np-20 batteries for a digital camera but they won't hold a charge.  They won't charge at all.  The charge light only flashes.  How can I fix these batteries?  Is there a way I can get them to charge up and hold a charge?

Thanks,

Lorne
0
Comment
Question by:livewirewebsolutions
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 92

Expert Comment

by:nobus
ID: 20364967
not that i know ...sorry, a bad battery will typically not charge, or hold a charge
0
 

Author Comment

by:livewirewebsolutions
ID: 20366498
Hi,

We have actually taken some of these batteries to a tech guy and they come back working perfect.  He won't tell us what he is doing to fix them but he somehow gets them to charge.  What do you think he is doing?
0
 
LVL 92

Expert Comment

by:nobus
ID: 20367057
There are some "tricks" that help in some cases, like put a voltage of 12 V on a 6v battery to kick-start it .  .
but they do not work always. Be happy if they work . .
0
 

Author Comment

by:livewirewebsolutions
ID: 20367671
Do you know how we would go about doing this?

Thanks.
0
 
LVL 92

Accepted Solution

by:
nobus earned 250 total points
ID: 20371906
you need to have an adjustable PS that delivers the voltage you want, then momentarily touch the battery with the contacts, to "trickle" it in to charging; once it starts - you do a full load /unload cycle for testing
if it does not start charging, you increase the voltage by 5%
Be careful not to increase the voltage too much ! and do it at your own risk
here some general info :
  http://www.priorityelectronics.com/info.html
http://www.mpoweruk.com/chargers.htm
http://www.batteryuniversity.com/partone-21.htm
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Memory upgrade issue 38 176
Can This PC Run OverWatch 7 108
Dell server memory configuration on R410 9 160
UPS and BTU calculation 3 68
System overheating may become a serious problem if not taken care of at the proper time. I am writing this article because I faced a similar problem. Intro All electronic devices produce heat, but computers are a special case - the processors bo…
This video teaches viewers how to process images for a time-lapse video. Programs required: Adobe Lightroom, Adobe After Effects, Video Editing Program. In Adobe Lightroom: Import sequence image files into Adobe Lightroom: Develop settings of an I…
I designed this idea while studying technology in the classroom.  This is a semester long project.  Students are asked to take photographs on a specific topic which they find meaningful, it can be a place or situation such as travel or homelessness.…

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question