Automatic detection of AAA cells

General Discussion of the 4 Cell Charger that Paul is working on.
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Mark
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Joined: Sun Jul 28, 2013 6:47 am
Location: Brisbane, Australia

Automatic detection of AAA cells

Post by Mark » Fri Oct 18, 2013 7:47 am

I think it would be useful if the 4 cell charger is not only capable of charging AAA cells, but has some way of detecting the difference between AAA and AA cells. This would allow for a different default charging rate, allow for higher internal resistance (as smaller cells have higher resistance, they're more likely to be rejected as alkalines, etc) and also allow for a lower default maximum capacity.

This is definitely something that can be done - the SkyRC NC2500 charger has this capability. I'm just not sure how it does it, or how much extra cost it would add to the 4 cell charger.
http://www.skyrc.com/index.php?route=pr ... uct_id=179

Maybe it could be done with a micro switch in each charging position?

Tcepsa
Posts: 46
Joined: Tue Aug 06, 2013 5:26 pm

Re: Automatic detection of AAA cells

Post by Tcepsa » Sat Oct 26, 2013 2:37 pm

That sounds like a good idea, though the less manual user intervention required, the better. Wouldn't there need to be a separate clip for a AAA battery? If so, perhaps it would be possible to detect which clip the battery was in and use the AAA settings if it's in the AAA clip.

Mark
Site Admin
Posts: 418
Joined: Sun Jul 28, 2013 6:47 am
Location: Brisbane, Australia

Re: Automatic detection of AAA cells

Post by Mark » Sat Oct 26, 2013 10:18 pm

Looking at Paul's early renderings of the 4 cell charger, I'd say it's just the same connectors for AAA and AA cells:

Image

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