Hi there and welcome
You will need a replacement battery for this.
You can purchaser the battery from my link below
You will then need a small screwdriver and remove the screws holding the back on
Once done you replace the battery with the one you receive and give it a full charge for 24 hours
Once done, it will work as normal again
If you would like any additional information or assistance, please do not hesitate to let me know.
Else if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.