Samsung SPH-I300SS-XAR - Manual (Page 22)

Common Problems 22
cable from system, remove handset from the cradle,
shutdown system, plug USB cable back in, replace
handset after system fully boots.
Battery
Question: What is the battery life of my i330?
Answer: Your i330 has two batteries installed. An internal
battery and an external battery. The internal battery keeps
all your stored data from being lost when the external
battery becomes fully discharged. The data can be saved
for a total of 15 hours. If the external battery is not re-
charged or another full battery connected within the 15
hours, the data will be permanently lost. The external
battery provides approximately 2.5 hours of continuous
digital talk time (1 hour in analog) or approximately 96
hours of continuous digital standby time (14 hours in
analog). When the battery reaches 5% of its capacity, the
battery icon blinks and there is approximately two
minutes of talk time left. The phone also sounds an
audible alert every 30 seconds and then powers down.