Most of us have been there. You’re out for the night, nowhere near a charger, and that dreaded "Low Power Mode" notification pops up way earlier than you expected. It’s the moment when you realize your faithful smartphone might not be quite as faithful as it used to be. The culprit? Usually, it’s the battery.
Battery health is often the single biggest concern for anyone looking to buy a pre-owned device. After all, a phone is only as good as the power source that keeps it running. When you purchase a refurbished phone, you want confidence that it won’t just look good on the outside but will perform reliably on the inside.
At Wisetek Market, we understand that apprehension. We specialize in giving high-quality tech a second life, and we know that transparency about component health is key to trust. Whether you have just bought a device or are browsing the market, understanding how to check battery health on refurbished iPhones.
Why Battery Health Matters in Refurbished iPhones
In an iPhone, degradation affects more than just how long you can scroll through social media before needing a plug. A battery with poor health cannot deliver peak power when the processor demands it. This often leads to unexpected shutdowns, sluggish app launches, lower frame rates while scrolling, and dimming of the backlight.
When you buy a brand-new phone, you start at 100 percent capacity. With a refurbished device, the battery has lived a previous life. While reputable sellers test these devices rigorously, understanding the health metrics yourself helps you verify the quality of your purchase. It gives you peace of mind knowing your new device will carry you through your day without tethering you to a wall outlet.
Steps To Check Battery Health on iPhones
Apple has made it remarkably easy to check the status of your battery without needing third-party apps or technical know-how. This feature, introduced in iOS 11.3, provides a transparent look at your battery’s maximum capacity relative to when it was new.
Follow these simple steps to find your battery health:
- Unlock your iPhone and locate the Settings app (the gear icon).
- Scroll down until you see the Battery tab and tap on it.
- Look for the Battery Health & Charging option (or simply Battery Health on older iOS versions).
- Tap it to reveal the Maximum Capacity percentage.
Here, you will see a percentage number. This number represents the current capacity of your battery compared to when it was brand new. For example, if it says 90percent, your battery can currently hold 90 percent of the charge it could when it first left the factory.
Below the percentage, you will also see a section labeled peak performance capability. This tells you if your battery is currently supporting normal peak performance or if performance management features have been applied to prevent unexpected shutdowns.
Understanding Battery Health Metrics
So, you have found the number, but what does it actually mean? Is 85 percent good? Should you panic at 79 percent? Let’s break down the metrics so you can interpret the data like a pro.
80 Percent and Above: Good Health
Apple considers any iPhone battery with a capacity of 80percent or higher to be in optimal condition. At this level, the device should operate at peak performance without any noticeable slowdowns. If you buy a refurbished unlocked iPhone and the battery health reads anywhere between 80 percent and 100 percent, you have a solid device that is ready for daily use.
60 Percent to 79 Percent: Fair Health
Once a battery dips below 80 percent, you might start noticing subtle changes. You might find yourself reaching for a charger by late afternoon rather than bedtime. The phone will still function, but iOS might implement performance management. This feature slows down the processor slightly during intensive tasks to prevent the battery from draining. It is still usable, but you should probably start thinking about a replacement in the near future.
Below 60 Percent: Poor Health
At this stage, the battery is significantly degraded. You will likely experience noticeable performance issues, such as apps taking longer to load, lower speaker volume, and the battery percentage draining rapidly. A prompt will usually appear in the Battery Health settings suggesting that you service the battery.
Performance Management
If your battery cannot provide the necessary peak power, your iPhone will prioritize staying on over running fast. You might see a message under Peak Performance Capability stating that the phone has experienced an unexpected shutdown. This is the phone’s way of protecting its internal components, but it is a clear sign that the battery is struggling.
Tips To Maintain and Improve Battery Health
Just because batteries degrade chemically doesn’t mean you can’t slow down the process. By adopting a few healthy charging habits, you can extend the lifespan of your refurbished iPhone significantly.
Avoid Extreme Temperatures
Batteries hate thermal extremes. Exposing your device to ambient temperatures higher than 95° F (35° C) can permanently damage battery capacity. Charging the device in high temperatures causes even further damage. Similarly, very cold environments can decrease battery life temporarily, though this usually reverses once the battery warms up.
Use Optimized Battery Charging
Your iPhone has a smart feature called Optimized Battery Charging. This feature learns your daily charging routine and waits to finish charging past 80 percent until you need to use it. This reduces the time your battery spends sitting at 100 percent, which reduces chemical aging. You can enable this in the Battery Health & Charging menu.
Update to the Latest iOS
Apple frequently includes advanced energy-saving technologies in iOS updates. Always keep your device updated to the latest version of the operating system to take advantage of these software optimizations.
Utilize Low Power Mode
When your battery gets low, Low Power Mode is your best friend. It reduces display brightness, optimizes device performance, and minimizes system animations. It also stops apps from downloading content in the background, like email fetch. This reduces the overall load on the battery, helping you squeeze out extra hours when you need them most.
What To Do If Battery Health Is Poor
If you check your settings and find your battery health is in the poor category, or if you are constantly tethered to a power bank, do not despair. A degraded battery does not mean the phone itself is dead.
The most direct solution is a battery replacement. Apple offers a battery service, as do authorized service providers.
However, if you purchased your device from Wisetek Market, you have an even better safety net. We stand behind the quality of our electronics. All our devices come with a one-year worry-free warranty. If you encounter battery issues that fall outside expected parameters within that year, we are here to help. We believe that buying refurbished shouldn’t mean inheriting someone else’s hardware problems.
Benefits of Buying Refurbished iPhones From Wisetek Market
Choosing a refurbished device over a brand-new one is a smart financial move, but purchasing from the right source makes all the difference.
Incredible Cost Savings
The most immediate benefit is the price tag. You can often find refurbished unlocked iPhones for a fraction of the original retail price. This allows you to upgrade to better specs, more storage, or a better camera without breaking the bank.
Environmental Impact
Electronic waste is a massive global issue. By choosing refurbished, you are actively participating in the circular economy. You are keeping a perfectly functional device out of a landfill and reducing the demand for new mining and manufacturing resources. It is a purchase you can feel good about.
Rigorous Testing
Unlike buying a used phone online, Wisetek Market devices undergo stringent testing. We wipe data securely, sanitize the devices, and test every component to verify they meet our high standards. Whatever condition device you choose, you know exactly what you are getting.
Your smartphone connects you to the world, and a healthy battery is what keeps that connection alive. Knowing how to check the battery health on your refurbished iPhone empowers you to monitor your device’s condition and make informed decisions about its care.
While all batteries age eventually, starting with a quality product makes the journey much smoother. Wisetek Market offers a wide selection of reliable, tested, and affordable refurbished iPhones that deliver performance you can trust. With our one-year warranty and commitment to sustainability, you get more than just a phone; you get reliability and peace of mind.
Are you ready to upgrade your tech for less? Explore the full collection of refurbished devices at Wisetek Market today and find the perfect companion for your digital life.