Re: NiCd and NiMH charging (and Dewalt)
- From: Tim Wescott <tim@xxxxxxxxxxxxxxxx>
- Date: Tue, 19 Feb 2008 15:15:19 -0600
On Tue, 19 Feb 2008 13:08:51 -0800, Neil Kalo wrote:
Is there much difference in a circuit designed to charge NiMH versus
NiCD batteries? How does the circuit tell what is attached? In
particular Dewalt brought out a completely new range of NiMH/NiCd
chargers when they introduced NiMH batteries. Was there any real need to
do this?
Yes, they did. NiMH batteries are more touchy about charging than NiCd
batteries. If you charge a NiCd battery using the optimal NiMH procedure
you'll get a slightly less than optimal charge; do it the other way
around and you'll get a damaged battery and possibly a fire.
--
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com
Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
.
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