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Do you charge your phone at night? Then you should be aware of this

Do you charge your phone at night? Then you should be aware of this
By N. Pedersen 24. November 2025

Charging your phone overnight seems convenient, but it can damage the battery and increase the risk of heat issues. See how you can charge more safely!

Many people charge their phone overnight without giving it a second thought.

It’s convenient, but it can also have consequences for battery life and home safety.

With a few adjustments to your habits, you can protect both your battery and yourself.

Modern smartphones stop charging at 100%, but automatically start charging again when the battery level drops slightly.

This creates many small charging cycles throughout the night.

While this is not immediately harmful to do, it does affect the capacity of the battery over time.

Lithium-ion batteries are best left between approximately 20 and 80 percent.

Long-term charging to 100 percent increases the temperature of the battery, and heat is one of the factors that wears down the chemical composition of the battery the most.

Bed is a bad place to charge your phone

Keeping your phone in bed may seem safe, but it’s not appropriate.

Many people place their phone on the mattress or under a pillow, which prevents ventilation and creates heat around the device.

Heat built up over time can degrade the battery and increase the risk of technical failures.

A simple surface like a table or shelf is far better.

It allows the phone to dissipate heat and reduces the strain on the battery.

Good habits for better battery life

Experts recommend starting charging when the battery reaches 20-30% and disconnecting around 80-90% if possible.

Always use original or quality-approved chargers to avoid unstable voltage that can damage the battery.

Also, avoid using fast charging constantly as it can increase heat build-up.

Activate power saving mode at night so your phone uses less energy and doesn’t need to charge unnecessarily.

It’s not about perfection, but about conscious choices.

By avoiding keeping the battery at 100% overnight, charging on a solid surface and using reliable chargers, you can extend battery life and avoid unnecessary risks.

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