The OnePlus 15 offers significantly faster charging than the iPhone 17 Pro Max. This article explores the benefits and drawbacks of fast charging, including its impact on battery health and charging speed, providing insights and scientific backing.
OnePlus 15 charges twice as fast as the iPhone 17 Pro Max — here’s why it actually mattersis out and not only does it come with a huge battery , but it also charges blazingly fast. Almost twice as fast as the latest and greatest Apple flagship - theOn one hand, people lament slow charging speed s and the reluctance of Apple and Samsung to up the supported charging power even on flagship phones.
On the other hand, there are concerns that fast charging will fry your battery, and everything above 30W is the equivalent of strapping explosives to your phone. Where's the truth? How much time does fast charging really save you, and does it kill your battery faster? As an advocate for fast charging, I decided to research the subject and explore it from all angles. For the past couple of years I've been using phones that support 80W fast charging, so I can share my personal experience along with all the scientific stuff and lab measurements. But first, the basics. I'll try not to be boring.Batteries are relatively simple tech. They consist of two main"parts"—an anode and a cathode with a substance between them called electrolyte. What happens is charged particles, lithium ions, move between these two parts and create a potential difference. When you hook a charger to a lithium-ion battery, the current from the grid makes lithium ions move from the anode, where they are stored. When the battery is in use, these stored lithium ions move through the connected device back to the cathode. This process generates heat, as the conversion is not 100% efficient and some of the energy turns to heat. What is charging power then? It's the rate at which this process of moving charged ions through the battery happens. And the faster the rate, the more heat is created in the process - that's why your phone heats up during charging, and the faster the charging, the more it heats up. Now, before we move on to how this process affects the battery health, let me share some of my personal experience with fast charging.On paper, being able to charge your phone in just 35-40 minutes, rather than waiting more than an hour, looks like a massive gain. I've been using anGiven I never let the phone discharge past the 10-15% mark, it's fair to say that I spent around 30 minutes on the cable every day for two years.charges from zero to full in 1 hour and 8 minutes, and considering she never lets it fully drain either, we can assume it spends roughly around an hour on the charger every single day. Doing the math is easy—I've saved exactly 365 hours during these two years, compared to my significant other. That's 15 days, or 7 days a year. Now, things are different in real life. You don't really"save" time when you charge your phone. Most people, including me and my girl, charge their phones overnight, when they're sleeping and not using their phones. The rare occasions when people need to charge their phone fast and it's critical are somewhat rare. You need to leave for a meeting fast, and your phone's at 20% for some reason, for example. Or you're traveling and have limited access to a charge point. You forgot to charge your phone overnight for some reason, and you need a top-up in the morning before going to work. These situations happen but not that often. We're creatures of habit, and most of the time charging our phones is as robust of a habit as brushing our teeth. There's a reason fast charging is not viewed as a critical and important feature in our polls and surveys. For most people, a bigger battery is much more important than faster charging. Speaking of which.Again, in theory, lithium batteries degrade through heat, high voltage, and time. Fast charging slightly increases stress early in the charge and also when the battery nears full charge. Most phones that support high charging speeds have algorithms in place to protect the battery. But even if you aggressively charge your phone every day, the most conservative estimate for the life of a modern smartphone battery is around 1000 cycles until the battery falls to 80% of its capacity. That's more than three years and the battery will still be fully functional long after that - just smaller in a way. Now take into account the fact that you will charge overnight most of those three years, using these protective algorithms and limiting the stress on the battery, even on fast-charging phones, and you'll see that there's nothing to worry about.So, it turns out that on the one hand, fast charging doesn't save you as much time as you might think, due to charging habits and the abundance of charging points around you. On the other hand, you don't have to worry too much about battery degradation with fast-charging phones. In the end, it's up to you. If you want the peace of mind that fast charging can give you—topping up the battery fast in emergency situations—then go for it, get a phone with fast charging. What do you think about this? Have you tried a super-fast charging phone and did it make a big difference? Share your experience in the comment section below.Mariyan, a tech enthusiast with a background in Nuclear Physics and Journalism, brings a unique perspective to PhoneArena. His childhood curiosity for gadgets evolved into a professional passion for technology, leading him to the role of Editor-in-Chief at PCWorld Bulgaria before joining PhoneArena. Mariyan's interests range from mainstream Android and iPhone debates to fringe technologies like graphene batteries and nanotechnology. Off-duty, he enjoys playing his electric guitar, practicing Japanese, and revisiting his love for video games and Haruki Murakami's works.A discussion is a place, where people can voice their opinion, no matter if it is positive, neutral or negative. 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