Re: battery power supply

On Mon, 25 Feb 2008 20:45:40 -0800, osbo47 wrote:

I would like to build a portable power supply for a 11" digital picture
frame. The 9volt supply would need to last 6 hours, Would I be better
off with 9 volt batteries tied together or use 1.5 volt batteries tied
together?

I'd go with 6 cells. How big will depend on how much current you need.
You might also use three 3-volt rechargeable lithum cells; the one in my
cellphone is rated at 1 amp-hour, which would be massive overkill for
your application.
.