Battery Life
Battery options for the Sewon SG-4500 include two types: a removable Li-Ion 900 mAh and a slim 550 mAh battery. The former provides a standby time ranging from 90 to 150 hours, and talk time between 1.5 to 6 hours, which was fairly competitive during its launch. The slim battery variant offers a shorter usage span, with 80 to 120 hours on standby and 1 to 5 hours of talk time. The interchangeable battery system was common then, allowing users to swap out and replace batteries easily.