Charging a battery past eighty percent causes lithium ions to pile up like a crowded parking lot
Pushing a lithium-ion battery to its maximum capacity triggers a phenomenon called lithium plating, where ions physically pile up and create dangerous metallic needles that can permanently damage the battery's internal structure.
Charging a battery past eighty percent is remarkably similar to a crowded parking lot where the final spaces are the hardest to find. As the graphite anode fills up, lithium ions struggle to find a place to settle, leading to a phenomenon known as lithium plating. Instead of flowing smoothly, the ions deposit as metallic dendrites on the surface.
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