Technologies

The Truth Behind Always Charging Your Phone and Battery Life Explained

Here’s the science behind your phone’s battery life. Apple, Google and Samsung weigh in on best practices.

In the not-so-distant past smartphone users were told not to leave their phones plugged in overnight or it could do serious damage to the battery. While current smartphone models now have protection from accidentally overcharging, plenty of folks still have questions about whether charging their devices for extended periods of time will damage the battery.

The short answer is no. Keeping your phone plugged in all the time won’t ruin your battery. Modern smartphones are built with smart charging systems that cut off or taper power once they’re full, preventing the kind of «overcharging damage» that was common in older devices. So if you’re leaving your iPhone or Android on the charger overnight, you can relax.

That said, «won’t ruin your battery» doesn’t mean it has no effect. Batteries naturally degrade with age and use, and how you charge plays a role in how fast that happens. Keeping a phone perpetually at 100% can add extra stress on the battery, especially when paired with heat, which is the real enemy of longevity.

Understanding when this matters (and when it doesn’t) can help you make small changes to extend your phone’s lifespan.

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The science behind battery wear

Battery health isn’t just about how many times you charge your phone. It’s about how it manages voltage, temperature and maintenance. Lithium-ion batteries age fastest when they’re exposed to extreme levels: 0% and 100%.

Keeping them near full charge for long stretches puts additional voltage stress on the cathode and electrolyte. That’s why many devices use «trickle charging» or temporarily pause at 100%, topping up only when needed.

Still, the biggest threat isn’t overcharging — it’s heat. When your phone is plugged in and running demanding apps, it produces heat that accelerates chemical wear inside the battery. If you’re gaming, streaming or charging on a hot day, that extra warmth does far more harm than leaving the cable plugged in overnight.

Apple’s take

Apple’s battery guide describes lithium-ion batteries as «consumable components» that naturally lose capacity over time. To slow that decline, iPhones use Optimized Battery Charging, which learns your daily routine and pauses charging at about 80% until just before you typically unplug, reducing time spent at high voltage.

Apple also advises keeping devices between 0 to 35 degrees Celsius (32 to 95 degrees Fahrenheit) and removing certain cases while charging to improve heat dissipation. You can read more on Apple’s official battery support page.

What Samsung (and other Android makers) do

Samsung offers a similar feature called Battery Protect, found in One UI’s battery and device care settings. When enabled, it caps charging at 85%, which helps reduce stress during long charging sessions.

Other Android makers like Google, OnePlus and Xiaomi include comparable options — often called Adaptive Charging, Optimized Charging or Battery Care — that dynamically slow power delivery or limit charge based on your habits. These systems make it safe to leave your phone plugged in for extended periods without fear of overcharging.

When constant charging can hurt

Even with these safeguards, some conditions can accelerate battery wear. As mentioned before, the most common culprit is high temperature. Even for a short period of time, leaving your phone charging in direct sunlight, in a car or under a pillow can push temperatures into unsafe zones.

Heavy use while charging, like gaming or 4K video editing, can also cause temperature spikes that degrade the battery faster. And cheap, uncertified cables or adapters may deliver unstable current that stresses cells. If your battery is already several years old, it’s naturally more sensitive to this kind of strain.

How to charge smarter

You don’t need to overhaul your habits but a few tweaks can help your battery age gracefully.

Start by turning on your phone’s built-in optimization tools: Optimized Battery Charging on iPhones, Battery Protect on Samsung devices and Adaptive Charging on Google Pixels. These systems learn your routine and adjust charging speed so your phone isn’t sitting at 100% all night.

Keep your phone cool while charging. According to Apple, phone batteries perform best between 62 and 72 degrees Fahrenheit (16 to 22 degrees Celsius). If your phone feels hot, remove its case or move it to a better-ventilated or shaded spot. Avoid tossing it under a pillow or too close to other electronics, like your laptop, and skip wireless chargers that trap heat overnight.

Use quality chargers and cables from your phone’s manufacturer or trusted brands. Those cheap «fast-charge» kits you find online often deliver inconsistent current, which can cause long-term issues.

Finally, don’t obsess over topping off. It’s perfectly fine to plug in your phone during the day for short bursts. Lithium-ion batteries actually prefer frequent, shallow charges rather than deep, full cycles. You don’t need to keep it between 20% and 80% all the time, but just avoid extremes when possible.

The bottom line

Keeping your phone plugged in overnight or on your desk all day won’t destroy its battery. That’s a leftover myth from a different era of tech. Modern phones are smart enough to protect themselves, and features like Optimized Battery Charging or Battery Protect do most of the heavy lifting for you.

Still, no battery lasts forever. The best way to slow the inevitable is to manage heat, use quality chargers and let your phone’s software do its job. Think of it less as «babying» your battery and more as charging with intention. A few mindful habits today can keep your phone running strong for years.

Technologies

Today’s NYT Strands Hints, Answers and Help for Jan. 24 #692

Here are hints and answers for the NYT Strands puzzle for Jan. 24, No. 692.

Looking for the most recent Strands answer? Click here for our daily Strands hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections and Connections: Sports Edition puzzles.

Today’s NYT Strands puzzle is one of those where the answers only make sense in pairs. There are six answers to find, and each of them matches up with one of the other answers. Some of them are difficult to unscramble, so if you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: A work of art.

If that doesn’t help you, here’s a clue: On museum walls.

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

FINS, FINE, FINES, GARB, BOAT, GATES, GATES, FIST, RATE, RATS, STAR, PAINT, SILL, SPAT

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers:

STARRY, NIGHT, WATER, LILIES, BOATING, PARTY

Today’s Strands spangram

Today’s Strands spangram is FAMOUSPAINTING. To find it, start with the F that’s four letters down on the far-left vertical row, and wind up, across, and then down.

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Toughest Strands puzzles

Here are some of the Strands topics I’ve found to be the toughest.

#1: Dated slang. Maybe you didn’t even use this lingo when it was cool. Toughest word: PHAT.

#2: Thar she blows! I guess marine biologists might ace this one. Toughest word: BALEEN or RIGHT.

#3: Off the hook. Again, it helps to know a lot about sea creatures. Sorry, Charlie. Toughest word: BIGEYE or SKIPJACK.

Technologies

San Diego Comic-Con Draws a Line: No AI Art Allowed at 2026 Event

The long-running fan convention is banning AI-created works from its popular art show.

Like Sarah Connor in The Terminator, San Diego Comic-Con is fighting back against AI. The prestigious, long-running pop culture convention has banned all artwork created by artificial intelligence from the 2026 Comic-Con art show. Rules posted on the Comic-Con website now state that AI-generated art won’t be shown in any form.

«Material created by Artificial Intelligence (AI) either partially or wholly, is not allowed in the art show. If there are questions, the Art Show Coordinator will be the sole judge of acceptability,» the website reads.

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A representative for San Diego Comic-Con did not immediately respond to a request for comment.

In the past, the convention allowed participants to display AI artwork, provided it was clearly marked as such and wasn’t sold. But now, those artists can’t even bring it through the door. The rule change is a response to artist-led pushback, according to a 404 Media report. San Diego Comic-Con is one of the world’s most famous pop culture conventions, uniting comics, movies, television, gaming, cosplay and collectibles.

Jim Zub, writer for the Conan the Barbarian and Dungeons and Dragons comic book series, told CNET he supports Comic-Con’s decision and hopes other conventions will follow their lead.

«Hundreds of thousands of people attend San Diego Comic-Con each year, and the excitement that generates isn’t because they’re eager to meet a computer spitting out homogenized slop,» Zub said.

Zub, who’s also an artist, is scheduled to appear at Comic-Con in 2026.

Entertaining AI

The use of generative AI in comic book and pop culture art has generated controversy in recent years as AI programs have become more skilled at imitating creators.

A central focus of the 2023 actor’s strike involved backlash against the use of AI in movies and television. The issue has continued to roil Hollywood, as actors, special effects designers, and other film workers see the technology as a threat, while some movie studios view AI as a way to reduce production costs.

Netflix has already begun using AI-generated imagery in at least one series, Argentine sci-fi show El Eternauta. CEO Ted Sarandos praised the technology during a 2025 earnings call.

«We remain convinced that AI represents an incredible opportunity to help creators make films and series better, not just cheaper,» Sarandos said at the time.

AI is also an issue in the video game industry, with publishers facing swift backlash whenever fans discover AI was used in a game. The Indie Game Awards rescinded two awards for the hit RPG, Clair Obscur: Expedition 33, after they found out that AI-made placeholder assets were included when the game launched. The game developer quickly patched the assets out.

While the movie and video game industries appear to have mixed views on using AI, Comic-Con has taken a firm stance, at least for now.

«Artists, writers, actors and other creatives gather and celebrate the popular arts in person because the people part of the equation is what matters most,» Zub said.

Technologies

Today’s NYT Mini Crossword Answers for Saturday, Jan. 24

Here are the answers for The New York Times Mini Crossword for Jan. 24.

Looking for the most recent Mini Crossword answer? Click here for today’s Mini Crossword hints, as well as our daily answers and hints for The New York Times Wordle, Strands, Connections and Connections: Sports Edition puzzles.

Need some help with today’s Mini Crossword? It’s a long one, as per usual on Saturday. 1-Down made me awfully hungry! Read on. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.