Samsung SCH-A870MBAVZW - Manual (Page 27)

Section 2: Understanding Your Phone 27
Battery
Section 2
2. Insert the top end of the battery in the direction of the
arrow printed on the battery into the phone housing. The
gold contacts on the top of the battery should match up
with those on the phone.
3. Push the bottom end of the battery down until it snaps
into place.
4. Slide the battery cover up until it snaps into place.
Remove the Battery
1. Slide the battery cover down and lift up to remove it.
2. Use your finger to lift the battery (bottom end first) up
and away from the phone.
Charge the Battery
Your phone is powered by a rechargeable standard Li-ion
battery. Only use Samsung-approved charging devices