Section 2: Understanding Your Phone2A: Your PCS Phone - The Basics 26Always use a Sprint-approved desktop charger, travel adapter or vehiclepower adapter to charge your battery.Warning! Using the wrong battery charger could cause damage to yourphone and void the warranty.It is vital that you use only the PCS-approved desktop charger specificallydesigned for your phone. Use of unauthorized accessories could damageyour phone and invalidate your warranty.To use the desktop charger provided with your phone:1. Plug the adapter in the wall and set the phone in the cradle. A red light on the charger lets you know the battery is charging. A green light lets you know that the battery is at least 90 percentcharged. A yellow light indicates that the battery is operating at atemperature that is too high or low, or that the charger is notplugged in correctly. Please check the charger and the battery.It takes about 4 hours to fully recharge a completely rundown battery.Connecting the CradleYour package includes a cradle for charging the battery andsynchronizing the Sprint PCS Phone™ with a desktop or laptopcomputer. If you do not plan to synchronize the Sprint PCS Phone™with a desktop computer, the cradle can be used as a battery charger only.When the cradle is plugged into a wall outlet, the battery charger is fullyfunctional.Note: Before you connect the i330 to the desktop/laptop computer, makesure you install the i330 software drivers from the installation CD.Connecting the Cradle to a Desktop Computer1. Turn OFF the desktop computer.2. Connect the USB cable to the desktop computer.