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

Ring Finally Goes Wire-Free for Its Latest 4K Video Doorbells

The launch of battery-powered versions of the company’s powerful AI doorbells has been highly anticipated.

Security company Ring on Wednesday announced a significant expansion of its video doorbell line, notably battery-powered versions of both its 4K and 2K models, priced from $80.

Both Amazon’s Ring and Google Nest debuted high-resolution video doorbells with new AI features in the fall of 2025. But they were wired only, and in my tests, I kept thinking, «I sure wish there were battery models available.»

Wireless video doorbells are far better for most front doors than models that require connecting to your existing doorbell wiring, which is often poorly positioned for a security camera. Mine, for example, is located on a wall beside my door that’s useless for any kind of video views, no matter how you angle a lens.

«Enhancing image quality in battery-powered doorbells means customers can enjoy reliable performance with the flexibility to install devices in a way that suits their space, whether renting or living in homes without existing wiring,» a Ring spokesperson said.

At first, I wondered whether the higher 4K resolutions and more advanced AI features would use too much power to support batteries. If so, Ring is the first to fix that issue with this suite of doorbells, including these models available for preorder right now:

Ring Battery Doorbell Pro — $250: This model offers up to 4K resolution and 10x zoom, and Ring says it features a redesigned internal architecture to support battery power.
Ring Battery Doorbell Plus (2nd-gen) — $180: This model includes a quick-release battery pack along with 2K video.
Ring Battery Doorbell (2nd-gen) — $100: This video doorbell includes 2K video, a 6x zoom and what Ring calls a «streamlined, rechargeable design,» which means you take the entire video doorbell to charge it, not just the battery — a design I greatly prefer, since Ring’s battery packs can get fiddly.

There’s also a new version of a Ring wired doorbell with 2K resolution, starting at $80. It wouldn’t be Ring without a plethora of doorbell devices to confuse newcomers, which is why I have a guide specifically for Ring video doorbells that will need some updating once I finish testing these new models.

Resolution plus an intelligence upgrade

Ring’s ordinary subscriptions of the Ring Protect plan give you cloud video storage and intelligent alerts for people, packages and vehicles, which are important but not really advanced AI. But spring for the $20-per-month Ring AI Pro cam, and this new generation of cameras opens up other capabilities.

Ring’s AI features include AI video descriptions, so if you get an alert, you can also get a summary of what the doorbell saw, including people and activities. A similar feature lets you search your video history with specific terms, such as «bike,» «truck» and so on. You also get the beta version of Ring’s Familiar Faces feature, which can ID logged faces of people who approach.

If these AI features make you uneasy and you’d rather protect your privacy, the best option is to avoid a subscription altogether or choose a lower-tier plan that gives you cloud storage without AI.

I also have a guide on how to turn off Ring’s detection and data-sharing features that might make you nervous, so you can keep what you like while ditching what you don’t.

Technologies

Today’s NYT Mini Crossword Answers for Thursday, March 26

Here are the answers for The New York Times Mini Crossword for March 26.

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.

Baseball is back! You’ll see baseball images patterned throughout today’s Mini Crossword grid, and when you solve the puzzle, they’ll spell out a certain word. Play ball! Er, read on for all the answers. 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.

Mini across clues and answers

1A clue: Degrees for boardroom execs
Answer: MBAS

5A clue: «___ want for Christmas …»
Answer: ALLI

6A clue: What Hamlet holds while giving his «Alas, poor Yorick!» speech
Answer: SKULL

7A clue: Wild, as an animal
Answer: FERAL

8A clue: Sphere
Answer: ORB

Mini down clues and answers

1D clue: Word after «match» or «mischief»
Answer: MAKER

2D clue: Bit of writing on a book jacket
Answer: BLURB

3D clue: Penne ___ vodka
Answer: ALLA

4D clue: Window ledge
Answer: SILL

6D clue: Bay Area airport, for short
Answer: SFO

Technologies

McDonald’s KPop Demon Hunter Meals Include Bright Purple Nugget Sauce

The Derpy McFlurry mixes popping boba pearls and berry sauce into a soft-serve dessert.

McDonald’s has seen success with themed combo meals, including its holiday Grinch Meal. Now, the fast-food chain is capitalizing on Netflix’s Oscar-winning animated film, KPop Demon Hunters, with new upcoming menu items and both a breakfast meal and a lunch/dinner offering. Let’s hope you like the color purple.

The HUNTR/X Meal, named for the K-pop girl group in the movie, is a 10-piece chicken McNuggets meal that includes a medium drink and three special menu items.

Ramyeon McShaker fries come with a small bag of soy, garlic, sesame and spice seasoning, along with regular McDonald’s french fries. You sprinkle the seasoning into the provided bag, dump in the fries, shake it all up and eat.

The meal includes two new sauces for the fries and nuggets. Hunter sauce is a sweet chili sauce mixing notes of chili, garlic and pepper. But my favorite item on this new menu is Demon sauce, a bold mustard sauce with some heat and a bold purple color. There’s just not enough dark purple food out there.

There’s also a new dessert, the Derpy McFlurry, which blends creamy vanilla soft serve with berry-flavored popping boba pearls, served with a swirl of wild berry sauce. McDonald’s named it for the supernatural feline, Derpy Tiger, from the movie.

If breakfast is your bag, the new morning meal is the Saja Boys Breakfast Meal, named for the movie’s boy band.

It includes a Spicy Saja McMuffin sandwich, which is a sausage McMuffin with egg and a spicy Saja sauce, hash browns and a small drink.

Both meals come with a photocard for one of the bands and a Derpy card. The Derpy card includes a QR code you can scan to unlock online content about the film.

The full KPop Demon Hunters menu should be available at participating McDonald’s beginning March 31.

The McDonald’s Grinch meal (and its accompanying patterned socks) sold out quickly, so KPop Demon Hunters fans may want to mark their calendars and nab a meal when they are released.