well I sent an e-mail to
[email protected] and they responded:
"Thank you for your inquiry on your SCH-i600 model phone.
The lights on the charging cradle indicate different degrees of charging of the battery.
When red, it means the battery is low and it is currently charging.
When the light is orange, it means there is not a solid connection to the cradle.
Make sure to stand the phone upright, place it in the cradle and then tilt it back into the cradle's 45 degree angle.
The light being green indicates the battery is fully charged.
If the unit is left in the cradle, you will see it turn red about once per hour as the charging will stop when it reaches full charge but will periodically send it a service charge just to maintain full capacity.
If you have any further questions on this issue or others, please feel free to email us, check our FAQs section at http://www.samsungusa.com/wireless then click SUPPORT, or contact Samsung Customer Support by phone toll free at 1-888-987-4357."