Samsung SPH-I300 - Manual (Page 267)

Section 23
264 Selecting Your Accessories
Accessory Options
Standard Battery
The standard battery provides approximately four hours of
continuous talk time in digital mode and 90 minutes of
continuous talk time in analog mode or approximately 100
hours of continuous standby time in digital mode and 20
hours continuous standby time in analog mode. The battery
charges in about two hours using any of the charging
accessories available with this phone.
Vehicle Power Adapter
You can charge your phone (even during a call) in your
vehicle using the vehicle power adapter.
Hands-Free Car Kit
Allows you to operate your phone hands-free so you can drive
safely. It also charges the phone’s battery.