2026 Latest Standard: Ideal Battery Level is 20%-90%
Never let it drop below 20%: Continuing to use the battery below 5% will cause irreversible damage; frequent use until shutdown will shorten the annual cycle life by 15%-20%.
Daily charging to 85%-90% is optimal: Avoiding the 100% high-voltage zone significantly slows down battery aging.
For special scenarios, charging to 100% is safe: Occasionally fully charging during long trips, business trips, or important meetings will not cause substantial damage to the battery.
(II) 2026 Battery Protection Function Setting Guide for Various Brands
Apple iPhone (iOS 19+)
Settings →Apple Battery → Battery Health & Charging
Enable: Optimizes battery charging and battery protection mode
The system will learn your sleep schedule, pausing charging at 80% overnight and fully charging before waking up.
Huawei/Honor (HarmonyOS 5.0/MagicOS 9.0)
Settings → Huawei Battery→ Battery Health
Enable: Smart Charging, Charging Limit
Recommended to set the limit to 90%
vivo/iQOO
Settings →vivo Battery → Battery Health
Enable: Smart Charging, Power Protection
Charging on demand is ten times better than “charging only when the battery is completely depleted”: Charge for 10 minutes on weekdays and 15 minutes during lunch breaks to keep the battery level comfortable. For extended continuous use, set the maximum charge capacity to 90%: When using a car charger or continuously charging in the office, it is recommended to use the maximum charge capacity to avoid prolonged full charging. For phones not used for extended periods, keep the battery level at 50% and turn them off. Charge every 3-6 months to prevent low battery. Avoid using high-load applications while charging: Playing demanding games, recording videos, or live streaming while charging can cause the battery and motherboard to overheat, which is detrimental to both. Regular activities such as browsing WeChat and news will not cause problems.