1. Turn your Toshiba A35-S1593 laptop over.
2. Find the laptop battery release button lock for your Toshiba A35-S1593 laptop.
3. Now that your Toshiba A35-S1593 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 A35-S1593 battery is removed, grab your replacement Toshiba A35-S1593 battery for installation.
6. Insert the battery into the slot. Push the Toshiba A35-S1593 battery towards the laptop and secure it in place.