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I Replaced My iPhone Battery Myself at Home and You Can Too

You can DIY your own phone battery replacement and save a ton of money in the process. Here’s how.

If you’ve got an iPhone 17, a Google Pixel 10 Pro or a Galaxy S25 Ultra, you won’t need to worry about the age of your battery for at least a few years. But batteries do age over time so if you have a much older iPhone or an old Android phone, you may well find that your battery no longer gives you the same battery life it did when it was new. But having an old, worn-out battery doesn’t mean buying an altogether new phone; it’s surprisingly simple to just replace the battery. 

Apple has its own do-it-yourself repair program, but even if you don’t use that, you can replace your iPhone’s battery yourself at home. With affordable third-party components and various tools available to buy, you can open up your iPhone and swap out that old, worn out battery — or replace a broken screen — often for less money than having a company do it for you. 

I did exactly that, replacing the old battery of a well-used iPhone 6 to give it a new lease on life. I was pleased to find the phone on eBay for only ÂŁ75 (about $100 or AU$140) back in 2020. That’s a lot less than a new iPhone 17 Pro, but unfortunately the battery had aged to the point where the software had to artificially throttle the performance to stop it from shutting down. Instead of casting off the phone and getting buyer’s remorse, I decided to purchase a replacement battery and tools from iFixit and have a go at changing out the battery myself.

It took a little over an hour, but I was able to safely swap out the battery and get the iPhone 6 running perfectly again. I’m not giving step-by-step instructions here — head to iFixit and grab a kit if that’s what you’re after — but I do want to describe my experience, including how easy the process was, and hopefully answer some of the questions you may have if you also need a new battery.

If you have a more recent model (an iPhone 12 or newer), then make sure to first check Apple’s new repair options and see if you’d be able to put in a replacement with parts directly from the company. 

Note that any maintenance you do on your own devices is entirely at your own risk.

To get more about iPhones, check out everything Apple announced at WWDC 2025.

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1. Why would you need to replace an iPhone battery?

Batteries age over time, and considering that the iPhone 6 was released years ago, it’s no surprise that the one I bought wasn’t running in prime condition. One time, the phone unexpectedly restarted while in use, and it flashed a warning that read, “This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again.” Even the phone itself knew it had a bum battery.

In short, a phone’s performance can be throttled if it can no longer cope with power demands. There is the option to turn throttling off, but this will result in more frequent crashes. Neither situation is ideal, so a battery replacement seemed like a smart way forward for me, since it wasn’t my main phone and I was willing to take the risks. 

2. How much does a replacement iPhone battery cost?

The problem with my situation specifically was that I bought the phone for so little in the first place that spending more money on a battery replacement service negated some of those initial savings. Apple’s replacement service costs ÂŁ49 ($49), which is more than half what I paid for the iPhone 6 I bought. As I was in the middle of a coronavirus lockdown when I attempted this, I wasn’t able to get to an Apple store to take it in, and sending it in through the mail would bring the total cost to around ÂŁ56 (about $75 or AU$105).

iFixit, however, sells a DIY replacement pack for ÂŁ35 (including postage to my home in Scotland). It costs $30 in the US, and with shipping costs that comes to about $38. It’s not a huge saving over Apple’s replacement, but every little bit helps. It also means you will still have the tools you need should you want to do this again in the future. All you’d need to buy next time is the battery.

3. What comes in the iFixit battery fix kit?

iFixit’s kit comes with a third-party replacement battery that is not from Apple, since Apple does not sell its parts separately for phones older than the iPhone 12. It also has all the tools needed to open the phone and remove the old battery. The only additional thing I needed was a hair dryer to heat up and remove the glue.

4. Does replacing a battery void your phone warranty? 

Opening up an iPhone will void the warranty, but if your battery is old enough to need replacing, odds are you’re already out of the 12-month warranty period. 

5. Is it safe to replace your iPhone battery yourself? 

This one isn’t so straightforward to answer. iFixit’s guide gives very detailed instructions on the steps involved, but there were a couple of points that made me nervous. One step involved heating up the back of the phone with a hair dryer in order to loosen the glue holding the old battery in place. 

Specifically, it said to heat it to “slightly too warm to touch comfortably,” which I found a little vague. Especially since that section also warned that “overheating the iPhone may ignite the battery.” But how hot is too hot? What signs would I see if it was overheating? I couldn’t find this information, and as such wasn’t sure how close to overheating it I might be.

Shortly after, while trying to pry out the old battery, I accidentally ripped into what looked like the black wrapping around that battery. I was pretty sure that the battery itself wasn’t punctured — there was no smoke or hissing — but I’d have felt a lot more comfortable if I had “emergency” instructions on hand about what to look out for and what to do if the battery did ignite. 

6. Can I replace my iPhone battery myself?

Up to a point I found I could, and I’m not the best at DIY. iFixit’s instructions were easy to follow, and there were only seven internal screws to remove, which were easy to then put back. 

One thing I found confusing was that the instructions on iFixit’s website end at the point where you remove the old battery. The only instruction in the conclusion was to follow the previous steps in reverse order. Admittedly, that wasn’t particularly difficult, but I would have appreciated more guidance at that point. 

I ran into one other issue in the process: When I removed the screen, I cracked the screen protector that was in place. I noticed the hairline cracks and was worried that I’d damaged the display itself, but thankfully that was unharmed.

7. Is it worth replacing an iPhone battery?

It depends on the age and value of your phone. If, like me, you bought a cheap used iPhone and just want to get it back up to speed, then it could be a great way to breathe new life into old tech without spending a fortune. Bear in mind, though, that this wasn’t going to be my main phone, nor did I buy it with my own money. For me, the risk was low. If I’d made a mistake and ruined the phone, it wouldn’t have been a big problem. You’ll need to consider whether you really can manage without the phone, and weigh your tolerance for other risks.

If you’re using a more recent device, like an iPhone 14 or 15, for example, I’d just take it directly to Apple. The savings you’ll get from doing it yourself aren’t so great as to justify the potential cost of damaging a more valuable phone.

I Took 600+ Photos With the iPhone 15 Pro and Pro Max. Look at My Favorites

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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 — MAGA Inc. — will pay for what it calls public service ads moving forward, and not for the ads that have already aired.

Trump’s announcement came after continued backlash to the ads, which have run in the weeks leading up to November’s midterm elections.

Those contests will determine whether Trump’s 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 “America will never be a communist country.”

“The 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,” Trump said in a post on Truth Social on Monday.

“This 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.,” 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.

Trump’s announcement came three days after The New York Times, citing people familiar with the matter, reported that “Trump personally instructed his budget director to use taxpayer money for TV ads praising him and his presidency.”

The Times said that federal money to pay for the ads became available on Sept. 19, “when 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.” 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, “The 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 ‘a general propaganda effort designed to aid a political party or candidates.’”

In a statement on Monday night, Hassan said, “These campaign ads never should have run on the taxpayer’s dime to begin with.”

“They 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,” said Hassan. “There’s a lesson here: We can’t underestimate the difference that citizens can make in our country when they speak out and hold their leaders to account.”

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 “public service announcements” intended to remind “Americans to love their country and understand what makes it worth defending, at home, at our borders, and abroad.”

“The ad is educational and unapologetically patriotic. We should be proud of our country,” 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 CNBC’s analysis of FEC filings, including $25 million in independent expenditures reported since the end of August.

— CNBC’s Luke Fountain contributed to this article

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Technologies

Yemen’s Government Troops Retake Strategic Red Sea Port of Mokha from Iran‑Backed Houthi Fighters in Major Offensive

Yemen’s government forces said they have retaken the Red Sea port of Mokha from Iran‑backed Houthi fighters, weakening the militants’ 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 Iran‑backed Houthi fighters, aiming to weaken the militants’ hold on a vital Red Sea oil corridor.

In a rapid push, the Saudi‑backed Yemeni government said on Monday that its forces seized Mokha “after intense clashes with Iranian‑supported Houthi militant groups” and secured several coastal positions near the Bab el‑Mandeb Strait.

The government also said it launched a “strategic offensive” 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 el‑Mandeb Strait, Mokha has long been the region’s primary coffee‑export hub and the origin of the term “mocha”.

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 Iran‑backed group could gain sway over the Bab el‑Mandeb Strait.

Iran’s 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 “deterrence measures” and to swiftly deploy troops to bolster the oil‑rich kingdom and counter Houthi attacks in Yemen.

The pact, reached after an emergency meeting of the three nations’ defense ministers in Riyadh, states that the countries share “a firm commitment to collective defense” 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 kingdom’s aviation authority.

In a Tuesday‑morning social‑media statement, Saudi Arabia’s 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 kingdom’s civil aviation system.

Energy market nervousness ‘likely to persist’

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 US‑Iran deal. Meanwhile, the risk of further escalation remains very real,” they added.

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Technologies

Russia plague: What we know about the suspected case reportedly linked to a lab worker’s 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 what’s 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 hasn’t been officially confirmed and laboratory testing is understood to be underway, the agency told CNBC in a statement.

“All of the patient’s contacts have reportedly been identified and are being monitored for illness, and none to date have shown symptoms of illness,” 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. It’s 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 doesn’t 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.

“Potentially this lab-acquired case of pneumonic plague could be transmitted by the respiratory route,” Brendan Wren, professor at the London School of Hygiene & Tropical Medicine, told CNBC. “Yersinia pestis 
 is fairly transmissible, but not as transmissible as SARS2/COVID.”

What’s happening with the suspected case in Russia?

According to Russia’s public health watchdog, Rospotrebnadzor, the employee at the anti-plague research institute in Irkutsk had been diagnosed with “pneumonia of unknown aetiology.” The situation in the cities of Irkutsk and Shelekhov was “stable,” 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 didn’t immediately respond to CNBC’s request for comment.

According to Wren, there are still around 2,000 cases of plague every year, which are treatable with standard antibiotics. “But there are multi-antibiotic resistant strains emerging, and if the laboratory [is] working on such a strain, then treatment options may be limited,” 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 “if Yersinia pestis was weaponised, a vaccine for military personnel may be desirable.”

Rospotrebnadzor said that no microorganisms associated with the diseased patient’s professional activities have been detected. The agency didn’t 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.

— CNBC’s Jenny Lee contributed to this report.

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