CDT Solar

No.  Not all of our customers use solar panel for automotive applications.  You can get a adaptor from Radio Shack or online for $2 each.

No.  Here is why:

1.  Not all applications requires battery charging.  Most of our sale is for non-battery applications such as fan, pump, signal and light.

2.  When battery charging is involved, many of our customers already own a charge controller and would like to replace or add to an existing solar panel.

3.  When charge controller is required, you do not need a charge controller if the solar panel is undersized.  For sizing, go to our solar panel section.  We do recommend a charge controller so you can monitor the battery condition which is the main function of the controller.

4.  There are numerous type of controllers on the market to choose for different battery charging functions.  Always get a larger amperage controller so you can re-use in case you need to replace or add another larger size solar panel.

Since we do not know whether:

1. If you are using our solar panel to charge a battery;

2. If you already own a controller;

3. If you need a controller;

We let our customer decide if  they need a controller, what type of controller and what size controller.