Hello, I had some success running the robot today. I tried using the good old regular 2 AAA batteries, and it runs perfectly fine! So I now I have to try to find a battery which is smaller (1/3 roughly) but has the same characteristics. People keep on telling me that Lithium batteries are the most long lasting, but I don't that they serve my purpose, after heavily testing them. I will be doing a some research and calculations on different batteries tonight, and I will post my results and hopefully will find the perfect battery. I think that I will also try some of the suggestions given in the reply. Thanks again. +--------------------------+ | Sep Seyedi | | -> me@sep.2y.net | | -> http://sep.2y.net | +--------------------------+