Charging the Handheld Device
You should fully charge the battery before you use the device for the first time or whenever the battery is low (Checking the Battery Level). It is normal for the battery to discharge in approximately 7 to 10 weeks when the device is not in use. Charging a fully depleted battery takes about 2 hours.
NOTE:
The device will not charge when it is outside the temperature range of 32° to 104°F (0° to 40°C).
Parent Topic: Getting Started