Core Viewpoint - The recent issues surrounding power banks highlight the broader concern regarding the finite lifespan of lithium-ion batteries, which are consumables despite their widespread use [3][8]. Group 1: Quality Issues and Supply Chain - A major cause of the recent power bank quality problems was a battery cell manufacturing factory that violated regulations by replacing the separator material between the positive and negative electrodes, leading to substandard quality [4]. - Power banks using these faulty battery cells entered the market around early 2024, resulting in overheating, swelling, and even fire incidents, prompting recalls and bans [5]. Group 2: Battery Lifespan and Chemistry - Lithium-ion batteries, including power banks, have a limited lifespan due to the inherent chemical reactions that occur during charging and discharging cycles [11][20]. - The phenomenon of lithium plating, known as "lithium dendrite" formation, poses a significant risk as it can lead to short circuits and potential fires [15][17]. Group 3: Maintenance and Safety Precautions - Proper maintenance can extend the usable life of lithium batteries, but all batteries will eventually degrade, typically after 300 to 500 charge cycles, equating to about two to three years of average use [21][22]. - Users should be vigilant about physical changes in batteries, such as swelling or leakage, and should seek professional help for disposal to prevent fire hazards [26][31].