April 19th, 2006
I have spent a good deal of time figuring out how to power the Gumstix for portable use. Initial tests with 3 AA (~4.5 V) batteries proved ineffective. A standard set of alkaline batteries from Radioshack gave me about 1/2 hour of performance. After that, the voltage diminished and fluctuated, causing the Gumstix to reset sporadically. The same low voltage problems attended the use of rechargable (what type?) AA batteries.
I am now looking into several other power options. Randell et al. were able to achieve 6 hours of continuous power using a 750mAh Lithium Polymer battery. I am looking into the following battery/charger combinations.
It is a bit pricey, but should work. I will update my findings on the Gumstix Resources page.