When many of us plug our phones in, we may like to get them fully charged up to 100%.

It might bring us comfort that our devices will last longer and make it through a whole day without having to worry about running out of juice.

But many tech experts warn charging up to 100% is actually a mistake.

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It's claimed constantly charging up to 100% could damage the battery in the long term and shorten its lifespan.

Experts instead advise sticking to the so-called 20 to 80 rule.

This means constantly keeping your phone battery between 20% and 80%, and not letting it get below 20 or above 80.

The website Tech Advisor says: "Giving

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