Don’t Charge Your Phone’s Battery to 100%! Here’s Why!

Many of us have the habit of leaving our cell phones charging overnight and starting the day with a full battery. Although it seems like the most practical option, doing so frequently can shorten its lifespan.

Today’s phone batteries are lithium-ion , a very efficient type of battery that deteriorates more quickly when kept at 100% capacity for a long time.

Battery chemistry in simple words

Chemical reactions occur inside the battery, allowing it to store energy. However, the closer it approaches its maximum capacity, the greater the internal voltage, and the more the cells are stressed.

It’s like inflating a balloon to the maximum every day: over time, it loses elasticity and resistance.

Therefore, regularly maintaining the battery at 100% accelerates its natural wear.

Why is it better to charge up to 80 or 90%?

Manufacturers and experts agree that limiting charging to between 80 and 90% helps conserve battery life . The benefits are clear:

• Less heat generated in the last minutes of charging.
• Less long-term chemical wear.
• More stable autonomy for longer.

This doesn’t mean you should never reach 100%. If you’re traveling or spending a long time without access to a charger, a full charge is helpful. The key is to avoid making it a daily routine.

Habits that prolong battery life

• Don’t wait until you reach 0% – ideally, charge around 20%.
• Do partial charges : Recharging several times a day is better than a single full charge.
• Take care of the temperature : avoid exposing your phone to the sun or extreme cold.
• Use quality chargers : Low-quality chargers can damage the battery.
• Turn on optimized charging : Many phones automatically adjust the charging rate to protect the battery.

Science backs it up

Maintaining your battery between 20 and 80% can double the number of full charge cycles it can endure before losing battery life.
A full cycle doesn’t mean a single charge from 0 to 100%, but rather the sum of small percentages until reaching 100% usage.

Tips and Recommendations

• Avoid leaving your cell phone plugged in all night.
• Adjust your habits according to your daily needs: if 80% is enough for you, there’s no need to charge up to 100%.
• Check your battery status periodically in your device settings.

Maintaining a charge between 20% and 80-90% helps extend battery life and keep your phone efficient for longer, reducing wear and tear and the need for constant recharging.


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