lipodapter, because the A123 cells have a base voltage of 3,6v instead of 3,7v
http://www.slkelectronics.com/lipodapter/index.htm
(Message edited by cavecrusher on April 21, 2007)
Yup, use a Dapter. The Chamaleon is designed to switch off when the voltage starts dropping when NiCads are fully charged. This never happens on Lithiums - the voltage keeps on going up.
So the Chamaleon would just be used as a high-voltage, current-limited supply. It jacks up a standard 12V power supply to around 60 Volts.
And the Dapter will switch off when you reach 3.7 Volts per cell.
John
My chameleons ROM is upgraded to LiPo Li-ion and Li-Fe, none of these are A123?
I think the A123 are a slightly more complicated formulation of Li-Fe? :s
It looks like the Chamaleon isl 6 range of chargers with V 8.41 or later handles A123 cells:
http://www.schulze-elektronik-gmbh.de/isl6-e.htmhttp://www.schulze-elektronik-gmbh.de/isl6-e.htm
As long as it cuts off at 37V, youre fine.
John
John, I would be interested to hear if you have had anymore experience with these cells. I have since discovered that the nicads i have will not be powerful enough for my new featherweight (they got very hot, very quickly!) and I need something light but with a large capacity and hence these seem ideal.
Now I know why fans could be a nice idea in a lightweight. Would PC fans work in feathers? Like, large fans?
David, I think so, but they would make one heck of a noise, like in my home computer, even the new ones.
(Message edited by kodster on May 15, 2007)
I am planning on fitting some 60mm fans to keep the nicads cool but even still they heat up to ouch this is a bit hot to hold temperature in around 30 seconds.
Not too surprising when I am running a 3hp mag off them
Been browsing the net and come across the Xtrema charger from TME.
http://www.tmenet.com/http://www.tmenet.com/
Apparently it will handle 10 lithium cells and is usable with A123 cells. Looks like quite a nice charger.
Posting Permissions
Reply With Quote
Bookmarks