I need to use a wireless shield along with the duemilanova board. It's going to need to power up outside -- battery only. I'd calculate the V/current draw across the board, but yet to purchase wireless device (likely Xbee or similar). I don't know what the draw of the two together. how much lif…

AVG 9V battery lifespan on arduino duemilanove?

system December 17, 2010, 4:31am 9

Lith-ion is the way to go it seems.

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