Charging Phone Overnight: Battery Myths Debunked

by Hassan Khan on May 30, 2022

Charging Phone Overnight: Battery Myths Debunked

There are too many questions when it comes to smartphone batteries. Whether to leave your phone plugged-in overnight or not? Is it bad for your phone or your safety? What is the better thing to do? How much should you charge your phone? When is the right time to charge your phone? How do you get the longest life out of the battery?

We have tried to address all these concerns by answering some of the most common misconceptions, and by presenting to you the myths and the truths of smartphone batteries.

Should you charge your phone overnight?

Many of you may have heard the warning that you should immediately plug out your phone when it reaches 100% and you shall never leave it charging overnight or else it could damage your phone’s battery. Although there are many myths floating around the internet supporting the statement, the answer to this question is quite the opposite.

Many of the modern smartphones now have protection chips, which monitor the capacity of the internal lithium-ion battery which makes sure that a phone is not overloaded. So whenever, the internal lithium-ion battery hits 100% of its capacity, the charging stops. But this definitely does NOT mean that you shall leave your phone charging overnight, because if you leave your phone plugged in overnight, its constantly going to use a bit of energy, trickling new juice to the battery whenever it hits 99% and this is what actually shortens the lifespan of your phone’s battery.

The best thing you can do about it? Buy fast charging cables & adopters from Zola.PK, which can charge your phone fully in 45 minutes only so you won't have to charge your phone overnight in order to get a fully charged battery the next working day.  What is even better than that? They’re available at an exclusive discount on Zola.PK, but for a limited time period only.

Fast Chargers

However, there are some precautions that you must take if you decide to charge your phone overnight. 

  1. Make sure you do not place your plugged-in phone under your pillow as trickle charges generate heat and placing your plugged-in smartphone underneath your pillow can exacerbate the condition. With heat, battery life can drop by 30% or more over time if your phone gets warmer than 100 degrees F while charging. The problem is that smartphones are designed to get warm while charging — it's how they work but placing your smartphone plugged in under your pillow calls for trouble. Although the heat cannot cause spontaneous combustion, it can cause damage to the battery.

Tip: Remove your phone’s cover while charging in order to prevent it from getting hot.

Mobile Accessories

  1. Avoid buying bad quality cables as they take longer to charge & have less resistance as compared to the original certified ones.

Quality Data Cables

Can Freezing my Phone solve battery issues?

Another statement that is too commonly circulating over the internet is that freezing your phone can solve battery problems which is completely false. Never charge your phone in extremely cold or hot temperatures. The lithium-ion batteries hate extreme heat and cold. According to BatteryUnversity, charging phones in extreme temperatures can create a permanent "plating of metallic lithium" on the battery anode.

Apple recommends not to charge your iPhone above 35 degrees C/95 degrees F, doing so will cause permanent damage to the battery. Expect the same issue with any modern smartphone.
Tip:  keep your phone off hot car dashboards in the summer and don't leave it in the sun when you're by a pool 


When Should I Charge my Phone?

Don't let your iPhone battery run all the way to zero percent. Partial discharge is the key for lithium-ion batteries. A full battery discharge does more harm than good. You might notice that your phone's battery doesn't last nearly as long as it once did. That's because batteries are on borrowed time from the get-go. The insides are in a constant state of decay that can't be helped. Over time, the materials inside are simply going to hold less and less power. If you've got an older iPhone still in use and wonder why it's only got a charge for a few hours compared to the almost full day (or two) you got when it was new, that's why.

What should you do? Plug your phone in when it enters the low power mode, which is 20% or below. And plug out the charger when it reaches 80%. Keeping the phone battery charge between 30% to 80% increases its lifespan.

Best Quality Chargers

These were some of the most common misconceptions about smartphone batteries, we hope this information helped you determine when or when not to charge your phone.

If you plan to swap phones every year or two, go ahead and charge it any way you want. However, if you want to stretch things out, use best practices for lithium-Ion batteries as described above. It may help. Or, just take it in to get a new battery installed every couple of years. It's much cheaper than a brand new phone.

For more informative blogs on a variety of topics, keep reading our blogs.