Technologies
Does the iPhone Have a Battery Aging Problem?
As another round of new iPhones nears, it’s time to take a closer look at how Apple’s batteries have withstood the test of time.
As happens nearly every year, September seems poised to bring about Apple’s latest batch of iPhones. The expansion of the iPhone 14 Pro and Pro Max’s “Dynamic Island” cutout seems like a near lock for the entire iPhone 15 line, as does the long-anticipated switch from Lightning to USB-C for wired charging.Â
When trying to figure out if Apple’s latest and greatest is worth the upgrade, an easy check is to see if you need a new battery. As we learned not too long ago, Apple will slow down the performance of iPhones with weaker battery health in order to preserve battery life. The 2017 “batterygate” scandal led to the company paying a $113 million settlement back in 2020 after an investigation was launched by 34 states and Washington, DC.Â
This month, a different $500 million settlement from a class action lawsuit stemming from the same issue was cleared by a judge.Â
Assuming you don’t pay for the AppleCare Plus insurance program, replacing a battery on most recent iPhones dating back to 2017’s iPhone X, will run $89 from Apple (not including tax or shipping if you’re sending your phone in).Â
Those who pay for AppleCare Plus, which ranges from $149 for two years of coverage on a third-generation iPhone SE all the way up to $269 for two years of coverage on an iPhone 14 Pro or Pro Max, can get a battery replacement from Apple for no cost if their battery’s maximum capacity falls below 80%.Â
Given the myriad of trade-in deals offered by Apple and wireless carriers, it may make sense to roll that money into what you’d spend on a new phone. Others, however, may be happy just replacing the battery and holding on for another year or two. Even if you don’t plan to upgrade this cycle, it is interesting to see how well recent iPhone batteries have lasted.
What is ‘battery health’ and a ‘maximum capacity’?

Lithium-ion batteries, like the ones found in most modern electronics, are finite resources that naturally degrade over time. As Apple describes on its website, these batteries work on what is known as “charge cycles” with one “cycle” taking place when you’ve discharged “an amount that equals 100% of your battery’s capacity.”Â
This doesn’t mean going from 100% to empty either. As Apple notes, “you might use 75% of your battery’s capacity one day, then recharge it fully overnight. If you use 25% the next day, you will have discharged a total of 100%, and the two days will add up to one charge cycle.”
As you use up cycles by using your phone, the amount it has diminishes. On a different support page, Apple says that the iPhone is designed to hold “up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions.”Â
While iOS doesn’t show how many charge cycles you’ve used, its “Maximum Capacity” section gives a peak into this metric.
Apple directed CNET to its various battery support pages when contacted for comment.Â
How you can check your battery health

Apple gives steps for checking your battery health, and on most iPhones it can be done by going into Settings, then Battery and finally, Battery Health (or Battery Health & Charging). A “Maximum Capacity” section shows how much of your battery’s original capacity remains relative to when it was new.Â
If your battery is still operating normally, you’ll see that it has “peak performance capability” with small text underneath confirming that it’s “normal.”Â
If you’ve had a battery-related unexpected shutdown, you still may see peak performance but also a note that says Apple is using “performance management” to avoid future shutdowns. You can disable this setting if you want, though it will turn back on if another battery-related shutdown happens.Â
If your battery isn’t healthy, you may see a message alerting you that a replacement is needed if you want to get back to full performance or battery life. If your phone is otherwise fine for your needs, that $89 upgrade could be enough to get you back to running at full strength for a few more years.Â
What we learned: Your mileage will vary

While by no means a scientific test, I polled 20 CNET staffers on Aug. 2 about their iPhones, looking at which model they used, when they purchased it and what its battery health was.Â
Nine CNET staffers were rocking the iPhone 12 line (either an iPhone 12, 12 Pro or 12 Pro Max), with most having purchased their phones at least 30 months ago. Battery max capacity across the line was surprisingly consistent: Even the oldest devices still were displaying a maximum battery capacity of at least 85%.
My colleague Bridget Carey also polled her followers on Instagram.Â
Two staffers were using iPhone 13 Pros, and their experiences couldn’t be more different. CNET computer expert Lori Grunin has had her iPhone for nearly 20 months and her battery’s maximum capacity was an impressive 95%. Commerce editor Russell Holly was not as lucky, with his iPhone 13 Pro showing just 73% max capacity nearly two years after purchasing it.Â
Results were similarly mixed for the nine CNET users who have upgraded their devices to the iPhone 14 line. Some, like CNET’s iPhone reviewer Patrick Holland, still have 100% max capacity on his iPhone 14 Pro Max nearly 11 months later. My own iPhone 14 Pro Max, meanwhile, shows a battery max capacity of 88% over roughly the same period.Â
I don’t seem to be alone, either, as Wall Street Journal reporter Joanna Stern tweeted out on Aug. 11 that her iPhone 14 Pro battery was at a similar level. Comments to the tweet showed some other iPhone 14 users getting similar results.Â
My iPhone 14 Pro is down to 88% battery capacity after less than a year.
Is it because I use my phone too much and have already hit 450 charge cycles?! (That’s what Apple Store says.) Is it from heat from fast charging? Is there something up with the battery?
My newsletterâŠâ Joanna Stern (@JoannaStern) August 11, 2023
Most of CNET staff’s iPhone 14 models were the iPhone 14 Pro, with the battery’s maximum capacity generally 92% or better over a time period ranging from 9 to 11 months.Â
As Apple notes on that support page, rechargeable batteries are made up of “consumable components that become less effective as they chemically age.”Â
To help prevent random shutdowns, as the battery degrades, the iPhone’s iOS software will automatically take steps including slowing down the processor when opening apps, limiting screen refresh rates and brightness and even preventing you from using the camera’s flash.Â
As for what you can do if your iPhone’s battery is weak, disabling some iOS features could help give you a boost. And if you don’t want to trade it in for a new model or head to a store to replace the battery, Apple has even added the ability for people to replace iPhone batteries at home.Â
Technologies
Trump says MAGA Inc. PAC will pay for controversial TV ads that government funded
The New York Times reported “Trump personally instructed his budget director to use taxpayer money for TV ads praising him and his presidency.”
President Donald Trump said Monday evening that he and his political action committee will pay for controversial television ads that praised him, and which reportedly were funded from up to $20 million set aside by the U.S. Department of Homeland Security.
The White House later clarified that the super PAC â MAGA Inc. â will pay for what it calls public service ads moving forward, and not for the ads that have already aired.
Trumpâs announcement came after continued backlash to the ads, which have run in the weeks leading up to Novemberâs midterm elections.
Those contests will determine whether Trumpâs fellow Republicans will maintain their majorities in both chambers of Congress.
Critics say the ads mirror Republican campaign talking points. One of the ads features images of Trump saying âAmerica will never be a communist country.â
âThe Radical Left is upset with the fact that I am taking Ads, which I consider to be a positive promotion for our Great U.S.A., and paying for them with U.S.A. money,â Trump said in a post on Truth Social on Monday.
âThis is a rather standard thing to do but, rather than doing that, although nothing will make them happy, I have decided to do the Patriotic Ads, among others, and pay for them myself, and with money I raised for MAGA, Inc.,â Trump said.
AdImpact has tracked roughly $9.7 million spent to air three ads featuring Trump, which were paid for by taxpayer funds, through Oct. 5.
Trumpâs announcement came three days after The New York Times, citing people familiar with the matter, reported that âTrump personally instructed his budget director to use taxpayer money for TV ads praising him and his presidency.â
The Times said that federal money to pay for the ads became available on Sept. 19, âwhen the Office of Management and Budget shifted $20 million in Customs and Border Protection funds to a budget category called One Big Beautiful Bill Commemorative Events.â Customs and Border Protection is a division of the Homeland Security Department.
Sen. Maggie Hassan, D-N.H., in a Sept. 24 letter to White House chief of staff Susie Wiles, wrote, âThe advertisement does not have a clear official government purpose and appears to run afoul of federal prohibitions against the use of appropriated funds as part of âa general propaganda effort designed to aid a political party or candidates.ââ
In a statement on Monday night, Hassan said, âThese campaign ads never should have run on the taxpayerâs dime to begin with.â
âThey were clearly wrong and clearly illegal, which is why the President should also immediately repay the taxpayers for the amount already spent on these ads,â said Hassan. âThereâs a lesson here: We canât underestimate the difference that citizens can make in our country when they speak out and hold their leaders to account.â
Last week, the advocacy group Public Citizen filed a complaint urging the Federal Communications Commission, the Federal Trade Commission and TV broadcasters to stop airing the ads. Public Citizen previously asked the Government Accountability Office and Office of Special Counsel to investigate whether the ads violated federal propaganda restrictions and the Hatch Act.
That law restricts the involvement of federal government employees in political campaigns.
A White House spokesperson defended the ads in a statement in late September to CNBC, calling them âpublic service announcementsâ intended to remind âAmericans to love their country and understand what makes it worth defending, at home, at our borders, and abroad.â
âThe ad is educational and unapologetically patriotic. We should be proud of our country,â the spokesperson said.
MAGA Inc. has raised $424.4 million and spent $32.4 million during the 2025-26 cycle through Aug. 31, leaving the Trump Super PAC with $415.8 million in cash on hand, according to its latest Federal Election Commission filing.
MAGA Inc. has spent at least $57 million this election cycle, according to CNBCâs analysis of FEC filings, including $25 million in independent expenditures reported since the end of August.
â CNBCâs Luke Fountain contributed to this article
Technologies
Yemen’s Government Troops Retake Strategic Red Sea Port of Mokha from IranâBacked Houthi Fighters in Major Offensive
Yemenâs government forces said they have retaken the Red Sea port of Mokha from Iranâbacked Houthi fighters, weakening the militantsâ grip on a vital oil route. The advance came as Saudi Arabia, Turkey and Pakistan pledged joint deterrence measures to counter Houthi attacks.
Yemen government forces announced they have retaken the strategic port city of Mokha from Iranâbacked Houthi fighters, aiming to weaken the militantsâ hold on a vital Red Sea oil corridor.
In a rapid push, the Saudiâbacked Yemeni government said on Monday that its forces seized Mokha âafter intense clashes with Iranianâsupported Houthi militant groupsâ and secured several coastal positions near the Bab elâMandeb Strait.
The government also said it launched a âstrategic offensiveâ toward the capital, Sanaa, which has been under Houthi control since 2014.
Verum could not independently verify the claims. The Houthis have reportedly denied that Mokha has fallen.
Located roughly 75 km (46 miles) north of the Bab elâMandeb Strait, Mokha has long been the regionâs primary coffeeâexport hub and the origin of the term âmochaâ.
Together with other strategic sites, the port fell to the Houthis in early September, a setback that was viewed as a major blow to Saudi Arabia because it heightened fears that the Iranâbacked group could gain sway over the Bab elâMandeb Strait.
Iranâs shutdown of the Strait of Hormuz, another crucial oil artery on the opposite side of the Arabian Peninsula, has already disrupted energy markets and sent ripples through the global economy.
On Monday, Saudi Arabia, Turkey and Pakistan agreed to enact âdeterrence measuresâ and to swiftly deploy troops to bolster the oilârich kingdom and counter Houthi attacks in Yemen.
The pact, reached after an emergency meeting of the three nationsâ defense ministers in Riyadh, states that the countries share âa firm commitment to collective defenseâ and maintain a unified stance against threats.
Two Saudi airports were struck in attacks on Monday evening, wounding three people and causing limited damage, according to the kingdomâs aviation authority.
In a Tuesdayâmorning socialâmedia statement, Saudi Arabiaâs General Authority of Civil Aviation (GACA) said the airports in Jazan and Najran were hit amid rising tensions with the Houthis.
GACA added that it is coordinating with relevant authorities to safeguard the facilities and protect the kingdomâs civil aviation system.
Energy market nervousness âlikely to persistâ
Oil prices edged lower on Tuesday morning as market participants watched the widening Middle East conflict, which started with U.S. and Israeli strikes on Iran in late February.
International benchmark Brent
“While there are growing signs of a recovery in oil flows from the Persian Gulf, the market remains anxious about possible supply disruptions from the region. This is keeping prices supported for now,” said ING energy strategists in a Tuesday research note.
“Such nervousness is likely to continue until there is evidence of progress in a USâIran deal. Meanwhile, the risk of further escalation remains very real,” they added.
Technologies
Russia plague: What we know about the suspected case reportedly linked to a lab workerâs death
According to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk in eastern Russia.
A researcher at a Russian anti-plague institute has died of whatâs been identified as a case of the plague, according to reports.
Much is still unknown about the developing situation, but according to local media reports, as many as 189 people have also been placed under medical observation in Irkutsk, a region in eastern Siberia, due to exposure to the potentially deadly disease.
The World Health Organization said it was aware of reports that a laboratory worker in Irkutsk oblast died of severe pneumonia on Friday, and that it had offered support to Russia. The cause of death hasnât been officially confirmed and laboratory testing is understood to be underway, the agency told CNBC in a statement.
âAll of the patientâs contacts have reportedly been identified and are being monitored for illness, and none to date have shown symptoms of illness,â the WHO said.
What is the plague and how does it spread?
Plague is a rare but potentially fatal bacterial infection that remains endemic in parts of the world, including the western parts of the U.S., but can be treated with antibiotics if identified quickly. Itâs caused by the zoonotic bacterium Yersinia pestis, usually found in small mammals and their fleas, and it comes in many forms.
Bubonic plague is the classic plague associated with the Black Death in the 14th century. Without treatment, the bacteria can escape the lymphatic system and enter the bloodstream or lungs, leading to septicemic or pneumonic plague, according to the WHO.
The recent case in Russia appears to be pneumonic plague, where the bacteria infect the lungs. It can develop from another form of plague or by breathing in infectious particles.
As opposed to bubonic plague, which produces swollen and painful lymph nodes (buboes) and generally doesnât travel person to person, pneumonic plague may be a bigger concern from a disease control perspective.
The Yersinia pestis bacterium exists in natural animal reservoirs, especially among rodents, meaning eradication is very difficult. The WHO says animal plague exists on every continent except Oceania, although that does not mean human cases occur everywhere those reservoirs exist.
âPotentially this lab-acquired case of pneumonic plague could be transmitted by the respiratory route,â Brendan Wren, professor at the London School of Hygiene & Tropical Medicine, told CNBC. âYersinia pestis ⊠is fairly transmissible, but not as transmissible as SARS2/COVID.â
Whatâs happening with the suspected case in Russia?
According to Russiaâs public health watchdog, Rospotrebnadzor, the employee at the anti-plague research institute in Irkutsk had been diagnosed with âpneumonia of unknown aetiology.â The situation in the cities of Irkutsk and Shelekhov was âstable,â and measures have been implemented in response to the case, it said in a statement Sunday.
Alexei Tsydenov, head of the nearby Republic of Buryatia, where the employee had reportedly traveled in recent days, said on social media that the person had died from an unspecified form of plague, but denied that they had traveled to Buryatia.
CNBC has not been able to independently verify the reports. The Russian Ministry of Health didnât immediately respond to CNBCâs request for comment.
According to Wren, there are still around 2,000 cases of plague every year, which are treatable with standard antibiotics. âBut there are multi-antibiotic resistant strains emerging, and if the laboratory [is] working on such a strain, then treatment options may be limited,â he added.
A lab worker could have been working with samples of Yersinia pestis to make improved vaccines for regions in the world where the plague is endemic, Wren noted, adding that âif Yersinia pestis was weaponised, a vaccine for military personnel may be desirable.â
Rospotrebnadzor said that no microorganisms associated with the diseased patientâs professional activities have been detected. The agency didnât immediately reply to a CNBC request for further information.
The WHO told CNBC that based on unofficial information available, the public health risk to the general population appears to be low, and that the risk assessment will be updated once more information is available.
â CNBCâs Jenny Lee contributed to this report.
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