Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: pomprocker on November 10, 2008, 02:01:41 PM

Title: USB cells (batteries)
Post by: pomprocker on November 10, 2008, 02:01:41 PM
Anybody seen these?

(http://www.usbcell.com/images/aacell.jpg)
(http://www.usbcell.com/prodimages/future/AAAfuture.jpg)
(http://www.usbcell.com/prodimages/future/9vcell.jpg)
(http://www.usbcell.com/prodimages/future/phonecell.jpg)


http://www.usbcell.com/ (http://www.usbcell.com/)
Title: Re: USB cells (batteries)
Post by: MaltiK on November 10, 2008, 05:09:06 PM
So they are rechargeable batteries that use the 5v supplied from a USB port, maybe a tad convienent/easy and its the only power adapter thats completely universal worldwide...
also, global warming is a myth...
Title: Re: USB cells (batteries)
Post by: Admin on November 13, 2008, 01:39:01 AM
USB is only 5V, while most robot mcu's require at least 6V or more. ;D
Title: Re: USB cells (batteries)
Post by: pomprocker on November 13, 2008, 11:33:59 AM
The usb is just for charging them. They would provide the same voltage as a regular NiMH cell.

I could just see someone powering their robot with 5 of the AA's and then their computer has a bunch of batteries sticking out of it when theyre recharging them.  :D
Title: Re: USB cells (batteries)
Post by: Gertlex on November 13, 2008, 05:32:26 PM
They charge slow and have low capacity compared to normal NiMH batteries.

That's what I read two years or so ago, anyways.
Title: Re: USB cells (batteries)
Post by: HDL_CinC_Dragon on November 13, 2008, 05:36:50 PM
Quote from: Gertlex on November 13, 2008, 05:32:26 PM
They charge slow and have low capacity compared to normal NiMH batteries.

That's what I read two years or so ago, anyways.

makes sense in my mind. The cell, charging circuit, and USB head all in the package the size and dimensions of a AA battery. Cant be too powerful
Title: Re: USB cells (batteries)
Post by: TrickyNekro on November 13, 2008, 06:01:52 PM
From what I read, they use 1300mAh NiMH for batteries and of course USB for charging...
I think that's for AA, but consider that you can get 2700mAh AA NiMH batteries, nowadays....

And as told before, global warming is just a myth, a capitalistic consumerism myth...

The only thing environmentalists here in my region did, was to close a racing track...
Cause they though that the birds nearby will be disturbed......
ha.... F@ckers....

GOOD FOR NOTHING, both these batteries and environmentalism...
They are good only if you don't have a charger nearby and you desperately need power...
But STILL not so good...