Looking to build your own Charge Controller. Here is the Diagram from the Inventor/Partner him self. It includes a detailed picture, parts list and where to get them from. Also shows how to include a Volt Meter and Amp Meter.
The 30 amp Charge Controller will bring your 12 volt batteries to a full charge and divert the load when approx 13 volts is reached. As the batteries are drained down to approx 12.5 volts, charging will start again. For this illustration I did use different size components to fit in this small box.
Once Payment Clears we will send the Diagram to you through mail. We are now sending the diagram in the mail due to the user below
Note: Part #s do change from time to time. If you find that a part # is not avaliable, please let us know and we will update the schematics with a new part #.
Not for resale
UPDATE
We have a thief on ebay named damion2739 that purchased our diagram claiming he is the inventor and is reselling it for $10.00. He is using a few different email address. Please be advised he does not understand circuitry and cannot provide support.