1. Turn your Toshiba A215-SP5809 laptop over.
2. Find the laptop battery release button lock for your Toshiba A215-SP5809 laptop.
3. Now that your Toshiba A215-SP5809 laptop battery is unlocked, find the battery release button down.
4. Holding the laptop battery release button, gently pull your battery away from the laptop.
5. Now that your Toshiba A215-SP5809 battery is removed, grab your replacement Toshiba A215-SP5809 battery for installation.
6. Insert the battery into the slot. Push the Toshiba A215-SP5809 battery towards the laptop and secure it in place.