My computer works when the charger is plugged in but every time I disconnect the charger the laptop dies.

You most likely have something stuck in your keys. This is an easy fix, I recommend using an air compressed can to blow the substance out of your keys. With the air compressed tube it would allow you to get to the tight spots under the keys with ease. If you feel like that isn't the solution, then follow the Toshiba Satelite Click 2 Pro Troubleshooting page for more solutions regarding your keyboard issues.