Samsung SGH-D415MSATMB - Manual (Page 26)

Getting Started
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5. Slide the battery towards the top of the phone until it clicks into
place. Make sure that the battery is properly installed before
turning on the phone.
Charging the Battery
Your phone is powered by a rechargeable Li-ion battery. A
travel adapter comes with your phone for charging the battery.
Use only approved batteries and chargers. Ask your local
Samsung dealer for further details.
The travel adapter allows you to use the phone while the
battery is charging, but this causes the phone to charge more
slowly.
Note: You must fully charge the battery before using your phone for
the first time. A discharged battery is fully recharged in
approximately 200 minutes.
1. With the battery in position on the phone, plug the connector of
the travel adapter into the jack at the bottom of the phone.
2. Plug the adapter into a standard AC wall outlet.