Insert The Battery

The biggest problem people encounter with this step is incorrectly inserting the battery. When inserting the camera battery in the battery compartment, it fits only one way.

Most rechargeable batteries are marked with "positive" and "negative" posts, and you simply have to line up the posts with the proper areas inside the charger. Other rechargeable batteries have a unique shape or a notch on one end that must be lined up perfectly with the charger.

Most of the time, the battery will have a notch or a curved edge that will only allow it to fit in one direction. You'll need to use a little force to fit the battery tightly into the compartment, and it should almost click into place.
However, you don't want to use too much force. The pressure from one finger should be sufficient.

If a memory card slot is behind the battery compartment door, you'll want to insert the memory card in a similar manner. It will fit only one way.

Use the notches or curved edges on the memory card to align it properly. (Keep in mind that not every camera ships with a memory card, and you may have to purchase one separately.)

With most camera models, to remove the battery or memory card, you simply press the battery or card in another fraction of an inch, and the battery or card should pop upward a little bit, allowing you to pull it out of the slot. Pinch the battery or card between your thumb and finger to lift it out of the slot.

The compartment door should swing closed again with an audible click. If the battery or memory card is not properly inserted, though, the door may not close properly. It takes a little bit of force to close the door, but excessive force could cause the door to pop off the hinge.

Always check the user guide or Quick Start Guide to ensure proper insertion and removal of the battery or memory card.