Samsung SCH-I830MSASPR - Manual (Page 30)

22 Section 2A: Your Phone: The Basics
Installing the Battery
To install the Li-Ion battery:
ᮣ
Insert the battery into the opening on the back of the
phone at a 45-degree angle, making sure to line up the
gold contacts. Gently press down until it snaps into
place.
Removing the Battery
To remove your battery:
ᮣ
Press the release latch to the left to release the battery,
pull up and out at a 45-degree angle. (Use the recessed
tabs on the left and right sides of the battery near the
bottom to facilitate removal.)