Battery degradation is a common annoyance for smartphone users. Many people wonder when exactly is the best time to charge the battery to ensure the longest possible use. Here are 5 tips to preserve your phone battery.
The old belief that you must wait until the battery reaches 0% or the phone shuts down before charging actually harms modern smartphones the most. This is because lithium-ion batteries in today's phones degrade faster if left at very low voltage levels.
When battery level drops to about 20-30%, you should charge it up to around 80%. Keeping the battery between 20% and 80% reduces stress on the battery cells, helping them operate more stably and produce less heat.
Besides knowing the right timing for charging, your daily usage habits are equally important. Here are 5 insider tips.
1. Avoid charging the battery to a full 100% and leaving it plugged in overnight.
Even though new smartphones have automatic power cut-off systems, leaving the charger plugged in overnight so the battery remains at 100% causes the battery to be under continuous "high voltage". This is the main cause of battery swelling and faster deterioration.
2. Do not let the battery drain completely to 0% until the phone shuts down.
Allowing the battery to fully drain disrupts the charging cycle balance and in some cases can cause the battery to enter a "deep sleep" state, making it impossible to recharge again.
3. Be cautious about heat while charging.
Heat is the number one enemy of batteries. Avoid playing high-graphic games or watching videos continuously while charging, and avoid placing the phone in poorly ventilated areas or inside cars exposed to intense sunlight.
4. Use certified charging equipment.
Use genuine chargers and cables from the original manufacturer or brands certified by international standards (such as MFi for iPhone). Non-certified equipment may supply unstable power, which damages circuits and batteries directly.
5. Enable battery preservation charging modes.
Both iOS and Android smartphones have battery preservation features such as Optimized Battery Charging on iPhone, Adaptive Charging on Google Pixel, or Protect Battery on Samsung. These systems learn your usage patterns, charge up to 80% first, then pause and complete charging near the time you typically use the phone, effectively reducing battery strain.