GPS battery and Monoprice.com for cable

I used this rechargeable battery to power the Arduino GPS.

Duracell Instant USB Charger with Lithium ion battery / includes universal cable with USB and mini USB

http://www.amazon.com/dp/B002FU6KF2/ref=asc_df_B002FU6KF21257924?smid=ATVPDKIKX0DER&tag=dealt5706-20&linkCode=asn&creative=395093&creativeASIN=B002FU6KF2

It worked well, i haven't seen how long it lasts, but it has a USB plug that can connect to the Arduino and it charges from a PC USB or wall charger.  It was a bit expensive but it seemed like such a nice solution for portable power, rather than burning through 9V batteries.

Monoprice.com is a crazy cheap place to buy cables.  I needed a short USB cable to connect the Arduino to the rechargeable battery with a USB plug.  The USB cables at best buy were $25.00 and up!  At Target they were $15.  At monoprice the cables were  $0.84 plus $2.24 to ship.  I got a cord to charge my cell phone while I was at it.  All for $4.24.