I. Overcharging and Overdischarging: The Chronic Suicide of Batteries
Overcharging: Continuously charging the device when it is already fully charged. This causes the positive electrode material to oxidize and fail, similar to forcing employees to work 24 hours a day.
Overcharging: Continuing to use the battery after it runs out of power causes the negative electrode graphite structure to collapse, similar to doing heavy work while hungry.
Safety threshold: It is recommended to maintain 20% to 80% battery charge, as if you were allowing the battery to have a rest period.
II. Extreme Temperatures: The Invisible Killer of Performance
The impact of temperature on lithium batteries is comparable to how humans are sensitive to the climate:
High temperature (above 45℃): The electrolyte decomposes and produces gas, which may cause bulging, similar to heatstroke in summer.
Low temperature (< 0℃): Lithium ions move slowly, resulting in a 30% reduction in battery capacity. It‘s similar to when one‘s movements are sluggish in winter.
Storage suggestion: The ideal temperature is 25℃, which is similar to the optimal room temperature for the human body.
III. Physical Damage: A Deadly Threat to Safety
Violent treatment of lithium batteries is like playing with fire:
Puncture: The rupture of the diaphragm causes a short circuit, instantly releasing all the energy.
Compression: Internal structure deformation leads to internal short circuit.
Fall: The shell damage may cause the electrolyte to leak.
Safety precautions: Avoid contact with sharp objects. During transportation, wrap with cushioning materials.
