15 R4, battery draining even after a complete shutdown - Dell Community
How to Calibrate Your Laptop's Battery for Accurate Battery Life Estimates
Why does my laptop battery fluctuate between 95% and 100% while it's plugged in? - Quora
Why did my laptop's battery capacity drop suddenly? Even the BIOS shows a warning about low capacity. - Quora
My laptop battery drains from 100% to 0% within two minutes (literally) as well as gets fully charged within two minutes. How do I make it last longer? - Quora