Charging your smartphone overnight? Here’s why you might want to rethink your charging habits.

I have this terrible habit of charging my mobile phone overnight.  So, as a reminder to myself and anyone else who has fallen into the same charging habits, here’s why you shouldn’t charge your smartphone overnight.

Why You Shouldn’t Charge Your Smartphone Overnight

why you shouldn't charge your smartphone overnight

Did you know that to charge an iPhone, it takes under an hour for a flat battery to reach 80% battery levels. Then it takes another 60 to 90 minutes to reach 100%. That’s 1.5 hours maximum, to recharge your phone’s battery.

How long do you sleep for? Say around 8 hours on a good night?

Leaving your phone plugged in and charging overnight is definitely convenient. It’s useful waking up to a fully charged phone, that can see us through the day and into the evening, which is why so many of us have gotten into this habit. But leaving your plugged in and charging overnight for 8 hours is using 6.5 hours of extra power that doesn’t need to be used.

Charging your smartphone overnight wastes energy and money.  And if that wasn’t bad enough, leaving your phone on charge when it’s fully charged can decrease the battery’s lifespan. This means that your battery will be unable to hold a charge—or unable to hold as big a charge as it used to—quicker.

I’ve damaged my phone’s battery by charging it overnight. So even though it’s only a year and a half old, it doesn’t hold a charge for very long. Then means soon I will have to replace the battery or the phone.  So I’ve considered this a very good lesson learned.

What to Do Instead Of Charging Your Smartphone Overnight?

Instead of charging your phone overnight, there are a few different things you can do. In some ways going green is all about making little changes to your life so that they eventually become habits and you don’t notice doing them anymore. This is what I hope to achieve with charging my phone!

Charge During The Day

I’ve recently started taking a USB charging cable with me to work. I then charge my phone by day by plugging it into my computer. When I’m working at home, I charge my phone on my laptop.    

I haven’t been able to find any reliable form of research or analysis on charging your phone via a computer versus plugged into the wall. Therefore, I don’t know how much extra energy, if any, a computer uses when it charges a phone.  However, I’m guessing it’s a lot less than leaving a smartphone charging overnight. And I know that pretty much as soon as it’s finished charging I tend to remove it from the charger, helping to prolong the phone’s battery.

Charge First Thing In the Morning

Instead of scrolling on my phone when I first wake up, I’m trying to get into the habit of charging my phone when I wake up instead. This way it’s got a decent amount of charge in it by the time I leave the house.

Remove Temptation

You could try removing the plug and cable from your bedroom so it’s not so much of a temptation to charge it up before going to sleep.  

Mobile Phone Charge Timers

I recently become aware of the fact that you can buy mobile phone timer devices* that you can plug into the wall. You can set the timer, and then it will stop drawing power after the set duration.  I don’t know how you feel about these, but I personally feel a bit uneasy buying a gadget that’s taken resources and energy to produce when I can just get into the habit of charging my smartphone during the day instead of overnight.  What do you think about them?

Here’s some more tips on how to make your smartphone battery last longer.

I’ve got more easy energy-saving tips right here in my archive if you are looking for more energy-saving inspiration. And in case you missed it here are energy saving tips one, two, and three in this energy saving series.

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