When charging, the power supply still shows 14%.

I am experiencing an issue with my device's battery when charging. Even after leaving it plugged in for a while, the power supply still shows only 14% remaining, and the battery percentage does not increase despite being connected to the charger. This makes me concerned that the battery may not be charging properly or there could be a problem with the power supply or the battery calibration. I have tried disconnecting and reconnecting the charger, restarting the device, and using different outlets, but the issue persists. The battery percentage remains stuck at 14%, and the device does not seem to be charging as it should. I am seeking advice on how to troubleshoot this problem and whether it might be a hardware fault or a software issue that needs fixing. Any suggestions or solutions would be greatly appreciated.