Hi. Assuming you have already tried a few other chargers
- Clean both the battery and phone power contacts with a pencil eraser
- Try a universal charger to be sure it is not a failed charging circuit on the phone (e.g. a failed micro USB port)
- Also try a different battery if a compatible replacement is available at your local phone accessory shops.
Please reply with a bit more details on your issue for a more narrowed advise as to what your options are.