Samsung SCH-I770HAAVZW - Manual (Page 29)

Understanding Your Phone 26
Battery
3. Slide the battery cover up until it snaps into place.
Charging the Battery
Note: Your Saga™ comes with a rechargeable battery. Fully charge this battery before using your phone.
Your phone is powered by a rechargeable standard Li-ion battery. Only use
Samsung-approved charging devices and batteries. Samsung accessories are
designed to maximize battery life. Using other accessories may invalidate your
warranty and may cause damage.
1. Plug the terminal end of the wall charger into the phone’s power/accessory
interface connector and the other end into an electrical outlet.