Solved: My laptop battery drops 50% to 0% suddenly - HP Support Community - 8441131
4 Ways to Revive a Dead Laptop Battery - wikiHow
How to Calibrate Your Laptop's Battery for Accurate Battery Life Estimates
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