Battery Science You Can Use

Here is how the chemistry turns into practical advice:

• Charge between 20% and 80% — extreme states of charge stress the electrodes and speed up degradation.
• Avoid heat — every 10°C above optimal roughly doubles the rate of chemical breakdown.
• Charge slowly — gentle charging creates fewer destructive lithium dendrites on the anode.
• Treat the percentage as an estimate — your phone calculates it from voltage curves that shift as the battery ages.