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Struggling with iPhone battery life? In this episode of Setup Essentials, Paul shows you how to check the battery on your iPhone, what iPhone battery capacity really means and the iPhone settings for battery life that actually make a difference. He covers how to check battery life on an iPhone, tips on how to maintain iPhone battery health long-term, and how to know when it’s time for an iPhone battery replacement since you can’t truly increase battery health on an iPhone once it declines.

But what can you do to make it last longer? By the end, you’ll know exactly how to adjust your habits and settings to squeeze the most out of your iPhone’s battery

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Tech
Transcript
00:00All right, so a lot of you guys asked for this one, which should offer a little reassurance
00:04that iPhone battery life struggles are not just a you problem. Over time, iPhone battery life will
00:09start to drain more quickly. That's all normal. All rechargeable lithium-ion batteries are
00:13consumables, which means they have a limited lifespan. Eventually, no matter how careful
00:18you are, their capacity and performance will decline. But there's some good news. You can
00:23make your iPhone's battery hold up longer than average. Sure, it's easy to blame iOS updates
00:28when your battery life dips. But the truth is, your charging habits, settings, and even
00:32environment all play a role. So in this episode of Setup Essentials, we'll go through the things
00:37you can do that actually make a difference for keeping your iPhone battery healthy, including
00:41how to know when it might be time for a replacement. All right, so the first thing you should do
00:48is figure out your current battery capacity. Get a baseline for how your iPhone's battery
00:53health is holding up, especially if you have an older phone. I'm doing this on iOS 26. First,
01:00go to Settings, Battery, Battery Health. Here you'll see a percentage next to maximum capacity,
01:08and this number tells you how much charge your battery can hold compared to when it was brand
01:12new. So if it says 90%, that means you're getting 90% of the original battery life. Once that percentage
01:19drops, there's no way to increase it again. So if you're looking for how to increase battery health
01:24on iPhone, it's not really possible. You can't restore capacity. You can only maintain what you
01:30have left. And again, some of the tips in this video should help you out. That said, it might be
01:35time to get your iPhone battery replaced. Apple's rule of thumb, when your iPhone battery health hits
01:4080%, start thinking about a replacement. For the average user, this usually takes around two years
01:45of daily charging cycles. You can get a replacement directly from Apple or an authorized repair center,
01:51which is the safest way to go. If you notice sudden shutdowns or way less screen on time,
01:56those are sure signs that you're due for a repair. And honestly, it's a great way to go.
02:01Replaceable batteries mean you can get more years out of your iPhone. But you're probably noticing that
02:06I have 100% battery capacity. That's because I'm doing this demo on the iPhone 17 Pro, and at the
02:11time of this review, it's practically brand new. The iPhone 17 Pro and iPhone 17 Pro Max are the
02:18best iPhones for battery life ever. We got into the benchmarks in our videos for the iPhone Air
02:23battery life and on our iPhone 17 Pro review. So go check those out if you haven't done so yet on our
02:28channel. Basically, the Cliff Notes version is that this phone offers several more hours of battery life
02:33than the previous one due to a number of improvements. But primarily, it's the A19 Pro chipset and larger
02:39batteries. So your alternative to replacing the battery on your older iPhone is upgrading to a
02:44new one. That's obviously a personal decision. But if you're interested, I'll link some of the best
02:48deals down below. Getting back to our iPhone battery life tips, this one is simple but useful.
02:53Turn on the actual battery percentage to help you keep track of how much battery you have left
02:58throughout the day. Go to settings, battery, toggle on battery percentage. This way, you'll always know
03:04exactly what's left instead of guessing from that little icon. Your iPhone's display is one of the
03:10biggest battery life drains. But here's also the biggest change you can do to make your battery life
03:15last longer. First, turn off auto brightness by going to settings, accessibility, display and text size
03:22and toggle the auto brightness option off. There is a disclaimer here, but it primarily applies to how bad
03:30it is if you leave your iPhone display at 100% brightness all of the time. Instead, why this is
03:36good, if you can keep your iPhone display brightness low and even as ambient lighting conditions change,
03:42your iPhone won't force the brightness back up. So if you're going to use this trick, just make sure
03:46to do so responsibly. Next, switch on dark mode to be your default appearance. On these OLED displays,
03:53black pixels use less power. Go to settings, display and brightness, turn off automatic and toggle on dark.
04:06Finally, turn off always on display if you don't really need it. With each new iPhone, they get more
04:10optimized for the always on display. So this might not make a huge difference depending on which
04:15generation iPhone you have. But small changes here do add up over the course of a day.
04:19When your iPhone battery life drops to 20%, you probably get prompted to enable low power mode.
04:27Low power mode is Apple's built-in battery saver switch that, when enabled, reduces background
04:31activity like automatic downloads, email fetching, iCloud syncing, and even dims your display. It's
04:37perfect when you're trying to squeeze extra life out of your phone, but it's not really meant to be
04:41used on the regular. It's mostly to keep your iPhone with enough juice for the essential needs until you
04:47get to a charger. Speaking of charging, all iPhones now include a setting called optimized battery
04:56charging. This slows charging past 80% until you actually need it based on your routine. Why?
05:03Because lithium ion batteries like to live in that 20 to 80% capacity range. Charging all the way to
05:09100% or leaving your iPhone plugged in overnight puts stress on the battery over time. So to enable
05:16this, go to battery settings, charging, optimize battery charging. I've seen some people suggest
05:25bypassing this and just setting the charge limit to 80% or even 85%, but personally, I think the
05:31built-in setting does what's best. But feel free to try other methods if you want. If anything, I'd say
05:38it's more important to avoid charging in extreme heat or cold. Don't leave your phone in the sun or a hot
05:44car. Heat is one of the fastest ways to damage your battery health. Similarly, you can use your iPhone
05:50while charging, but if it's getting really hot, that's your cue to give it a break. Now, another
05:55thing to keep in mind, portable power banks. They're super handy, but not all of them treat your iPhone's
06:00battery kindly. If you want the safest option, stick to Apple's own charging accessories. For third-party
06:06gear, look for certified MagSafe power banks. Brands like Belkin and Moffy are solid, and you'll even find
06:13them in Apple stores. I know a lot of people love Anker, myself included, but just be aware they've
06:18had a few overheating recalls. That doesn't mean every product is bad, but it is worth being cautious.
06:25I'd suggest sticking to the ones that, again, are sold through Apple. And hey, if you want me to do
06:29a full breakdown of the best iPhone power banks, just let me know in the comments. Going back to
06:34making your iPhone battery life last longer, here's another sneaky drain. Background app refresh.
06:39If you don't need apps constantly updating the background, turn it off or set it to Wi-Fi only.
06:45This cuts down on both battery usage and data. Speaking of data, your iPhone uses a lot more
06:52energy on cellular connections than Wi-Fi. If you're someone with a strong Wi-Fi connection,
06:58use that instead. Your battery will thank you.
07:00So that's it. The real ways to check, maintain, and stretch your iPhone battery. Remember,
07:09you can't reverse battery capacity once it drops, but with the right habits and settings,
07:15you can slow that decline and get the most life out of your device, both on a daily basis
07:20and more importantly, long-term. If you found this helpful, hit like, subscribe for more setup
07:24essentials, and let me know in the comments what's your go-to trick for saving iPhone battery.
07:28Until the next one, I'll catch you later.
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