What you will need:
9V Rechargeable battery
Solar cells (About 11V)
100uf 10V capacitor
9V battery connector
Power connector (to connect to the Arduino board)
Step 1: Setting up the Arduino board
Change the jumper of the Arduino board to "EXT"
Step 2: Understanding the components
Step 3: Getting the power connector ready
Step 4: Wiring up the circuit
You can download a more detailed document on this from my website at:
You're done! Now you can break away from power points and even have Arduino projects out in natural environments without a problem.