Sony DSC-W300 Cyber-shot&reg Instruction Manual page 12

[ To remove the battery pack/"Memory Stick Duo"
Open the battery/"Memory Stick Duo" cover.
"Memory Stick Duo"
Make sure that the access lamp
is not lit, then push the "Memory
Stick Duo" in once.
• Never remove the battery pack/"Memory Stick Duo" when the access lamp is lit. This may cause damage
to data in the "Memory Stick Duo"/internal memory.
12
Battery pack
Slide the battery eject lever.
Be sure not to drop the battery
pack.