I 'm looking for a battery solution to power up BeagleBoard-xM. Until now, I used a 5 V, 3.2 A AC/DC power supply adapter (2.1 mm barrel plug).
I 'm thinking of using a 4 x 1.2 NiMH AA battery pack (or NiCd). This way voltage will be 4.8 V, that is the minimum -xM's electrical specification for input voltage DC. If this is not a proper solution, please let me know.
My question is:
How can I determine amperage to be 2 A or greater? As far as I know, the board will only take the current it needs when attached to the battery, but low amperage may be the reason of features misfunction.
Any help, or even different solution, would be appreciated.