Update of /cvsroot/firebug/firebug/doc
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv15938
Added Files:
battery_test.txt
Log Message:
Documentation regarding the Li-Ion battery performance test
--- NEW FILE: battery_test.txt ---
7/16/04
Today I ran a test to see how long a recharged Li-Ion battery could
run a mote. Since we noticed a significant number of battery failures
after connecting the GPS antennas to the motes, I specifically wanted to
see how long these Li-Ion batteries could last while the motes
operated with the GPS antennas. Since we currently do not have a
means of connecting the Li-Ion battery directly to the mote, I had to
use a breadboard to help establish the power connection. Using a
molex connector that I had created before, I connected it to the mote
and then to the breadboard. Then, the battery was connected to the
breadboard. The battery I used started at 4V, which is what I had
charged it to earlier. The battery ended up running the mote for 5
hours before it started to give bad data. Surprisingly, when this
the mote was no longer producing valid data, the Li-Ion battery was
still at 3.5V.
|
