AVR-Chat

Hi,

lithium polymer battery is does not like sourcing high
currents. NiCad's and NiMh's do. May be its better you
start with rechargable battery tecnologies and decide
the mode of voltage regulation after that. series
connection of batteries during charging seems to me
more appropriate too.

Murat



--- David VanHorn <dvanhorn@cedar.net> wrote:

> 
> >
> >the printer mechanism and controller both operate
> from 5V. I am not 
> >intending to directly drive the logic, but to
> interface to the 
> >printer controller by RS232.
> 
> 
> Ok, I understand.
> 
> You can probably find something at your local model
> airplane shop, in Lithium Polymer batteries, that
> will fit. They aren't cheap, but they offer huge
> output power, and you get >7V with two cells.  Then
> you just need a buck reg for your logic.  Your
> printhead should be able to operate here. 
> 
> The primary determinant here will be the printhead's
> operating range. 
> Look for the "do not exceed" numbers in the data
> sheet. 
> 
> 



		
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