Reality of 120W fast charging technology. Is it good to leave your phone charging overnight?


Our Old Blog on this topic!

In our old blog we had briefly explained about battery saving & charging tips for your smartphone, we hadn’t looked into how fast charging affects battery capacity. Before writing this blog I asked many of my friends and colleagues about their preferred charge rate. Most of them wanted to charge their phone very quickly but, by this guess I could make out that fast charging clearly emerged as the preferred method, while slow overnight charging has clearly fallen out of fashion recently.

Click on the below buttons to look into our older blogs related to this topic.

Idea of fast charging, Who introduced it?Do people actually need a fast charger for their smartphones?

This idea of fast charging of smartphones was already on its way out a couple of years ago, and was first introduced by Apple and then Google Pixel phones were given fast charging support for the first time but it was still the preferred method for a quarter of people. Now that number is down from 25% to 15%.

Why is slow charging good for your smartphone’s battery health?

The unresolved fact about slow charging is, it’s always an option – just use one of the low-power chargers you have with you or which is given in the box with your phone. Though it charges your phone slowly, its impact is great after a few days or months. The main problem with the fast chargers is the phone gets heated when you keep it for charging but with the slow charger it doesn’t happen. 

Heat is the enemy of your smartphone’s battery life and I wish Android exposed better controls for charge speed, but even without on-screen controls it is easy enough to keep a 5W/10W charger at your night stand.

Most people with a good smartphone & battery knowledge will go for a phone in the 25-33W range. These charge fast enough with no downsides. The biggest problem is that nowadays smartphone brands don’t come with any charge as phones at the cutting edge of charge technology do.

 How fast chargers damage your smartphone’s battery gradually!!

Speaking of, the phones that support 100+ Watt charging were the second most popular category, narrowly beating the 50-67W devices, which came in third. Charging is a chore and we can understand why people would want to get it over with quickly.

Doesn’t it damage the battery, though? Not so much, say manufacturers, who claim that it will retain 80% of its original capacity after several hundred cycles but many customers know deep down that it isn’t true or trustable – some promise to match the 800 cycles industry standard, others even promise to exceed it twice and go as high as 1,600 cycles. Keep in mind that 800 cycles is over 2 years of daily charging from 0 to 100% is the entire idea.

It’s also worth noting that many of the phones that boast super fast charging capabilities are marketed as gaming phones. After two years of normal usage and moderate gaming a mobile GPU will be noticeably lacking in capabilities compared to new models and it’s inevitable in today’s world. So, even if the battery is as fresh as the day it came out of the factory, the device will not be a great gaming phone anymore.

Do mobile phone batteries cause Pollution beyond imagination?

People who are involved in protecting the environment worry that it can’t be overlooked that this creates e-waste. These days a phone with a dead battery may not be worth the price of the repair, if you can even find someone to do the repair. A dead battery used to be a 60-second, no-tools-required kind of fix when batteries were user-accessible.

How the European Union is treating this crisis!

The European Union has been working on a great cause to bring that back and to make it possible. In India people are mostly least bothered about these things. European Legislation within some days may mandate that all consumer electronics have user replaceable batteries with “basic and commonly available tools”. The European Union is also considering setting requirements for how long phones should be supported – it might demand 7 years of updates and availability of spare parts. This can profit the customers market. Those two things combined can make worrying about battery longevity a thing of the past.


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Author – Aaron Dsouza.


Hey myself Aaron, Owner and Author of Master Of Phones. I write blogs related to latest smartphones, apps & games, tech news.

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