Make your projects to go green with USB / DC / Solar Lithium Ion/Polymer Charger - v2. This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers.
USB / DC / Solar Lithium Ion/Polymer Charger - v2 is very easy to use. Pick up any 3.7V/4.2V Li-Ion batteries, and a 6V solar panel. Plug the battery into the BATT port using a 2-pin JST cable and the solar panel into the DC jack using a 2.1mm terminal block adapter. Put the solar panel outside to start charging. You can power another project like a Mintyboost at the same time by connecting to the LOAD output port.
The carefully designed charger is designed specifically for solar charging and will automatically draw the most current possible from the panel in any light condition. Even thought it isn't a 'true' MPPT (max power point tracker), it has near-identical performance without the additional cost of a buck-converter.
Note: USB / DC / Solar Lithium Ion/Polymer Charger - v2 is for use with Adafruit Lipoly/LiIon batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.
Adafruit Web Site: https://www.adafruit.com/products/390