Sony "GumStick" batteries
 

I have a Sony Net Walkman that I want to take with me on my Desert trip, for the boring stretches and to help me sleep / relax at night. It has a small, stick-like battery (called a NH-14WM-A on the left in this picture).

http://www.eurobatteries.com/images/.../ch.7-2988.jpg

The problem is that at home I charge it though the mains power in a little cradle. There is no AC input / charging socket on the device. I want to take it with me but it doesn't appear that Sony make a "car charger" for this type of battery.

Any ideas as to how I charge it on the go? Or should I just buy 4 or 5 before I go away and charge them all at once?

------------------
=-=-= ON THE EDGE! =-=-=
http://www.geog.ucl.ac.uk/~lmiller/PanMed2003.html