- Choose reputable brands with proper safety standards to avoid damaging your phone’s battery. Low-quality power banks can cause issues.
- Both use lithium-ion technology, with power banks storing and transferring energy. Capacity is measured in mAh or Wh.
- Avoid full charge cycles and extreme temperatures, and use certified chargers and power banks. Recommended models include Anker Portable Nano, Anker 737, and SHARGEEK Storm 2.
The debate surrounding the safety of power banks has been swirling around the internet for years. With literally hundreds, if not thousands, of options available, it can be confusing to know which ones are safe. So, how can you choose a safe power bank, and are they inherently risky for your mobile device?
This guide will try and explain how smartphone batteries and power banks work, and then, address the question of whether power banks can damage a smartphone’s battery.
- How Smartphone Batteries Work? ↪ Li-ion Batteries’ Working Mechanism
- How Do Power Banks Work?
- Do Power Banks Damage Phone’s Battery?
- When are Power Banks a Risk to Your Phone’s Battery? 1) Insufficient Capacity & Low Voltage Rating 2) Poor Quality Internal Circuitry 3) Lack of Compliance with Safety Regulations 4) Poor Quality Charging Cables
- How to Charge Your Phone Properly? 1. Avoid Full Charge Cycles 2. Avoid Charging in Extreme Temperatures 3. Use Certified Chargers and Power Banks
- Best Power Bank Recommendations 1. Best Under $50 : Anker Portable Nano 2. Best Under $130 : Anker 737 3. Best Overall : SHARGEEK Storm 2
- Conclusion
How Smartphone Batteries Work?
On the most basic scale, smartphones contain lithium-ion (Li-ion) batteries that convert chemical energy to electrical energy . Li-ion is one of the most popular types of rechargeable batteries that exist today and is exclusively used in almost all modern-day consumer smartphones. At the very core, they rely on the movement of the lithium ions between two electrodes.
Mobile phones today almost exclusively use Li-ion batteries
↪ Li-ion Batteries’ Working Mechanism
For a brief overview, the way Li-ion batteries work is that they consist of a cathode (which is usually a thin lithium oxide compound), an anode (graphite), an electrolyte (a lithium salt dissolved in a solvent) and a separator (keeps the anode and cathode separate, but allows ions to pass through).
When you connect your phone to a charger i.e. an external power source, the current (electrons) start to flow towards the cathode . Lithium ions then flow internally via the electrolyte from the cathode to anode . As these lithium ions then embed themselves within the anode, its chemical potential rises . The difference in chemical potentials between the cathode and anode create a potential difference which is how the battery is able to store energy.
A schematic diagram showcasing how a Li-ion battery charges and discharges
The complete opposite of this happens when you use your phone. The process reverses and electrons flow from the anode through the external circuit of your device (essentially powering it) towards the cathode. The Li+ ions however move internally again, from the anode to the cathode .
How Do Power Banks Work?
Power banks consist of an internal battery that is used to store electrical energy , which can then be transferred to any device you wish to charge. Similar to the mechanism described above, power banks also use Lithium-ion cells , and can charge or discharge in a similar way as a phone.
A cutaway view inside a typical power bank
The battery capacity within a power bank also varies, and is measured in mAh or Wh . This means that a higher capacity allows for charging your device more times . Like the name suggests, a power bank is essentially a supply of electrical energy, stored chemically within its own battery.
Do Power Banks Damage Phone’s Battery?
Power banks can damage your phone’s battery if they don’t meet safety regulations. This might happen if they’re made by unreliable manufacturers , priced surprisingly low , or are incompatible with modern smartphone charging standards.
When looking for a power bank, try and opt for something that is compatible with the device you’ll be charging, and with these, it’s best to not compromise on quality under any circumstances. A low-quality power bank can not only shorten the lifespan of your phone’s battery but also pose a safety risk due to the lack of safety features like overcharging protection or temperature regulation .
When are Power Banks a Risk to Your Phone’s Battery?
Not all power banks are made the same and are more different than they are similar to one another. Some would be perfectly normal to use on a day-to-day basis, while others could be a ticking bomb, waiting to destroy your battery.
This is why it is important to keep certain elements about these in mind before opting for a suitable power bank for your phone.
1) Insufficient Capacity & Low Voltage Rating
Make sure that any power bank you choose has a battery capacity that is larger than the capacity of your device . It doesn’t have to be a phone per se, but any device you want to charge. Not doing this will result in a scenario where the power bank would drain out before your device is fully charged, even once.
A low-capacity power bank runs out of battery power more quickly.
Moreover, try to look for power banks that match your phone’s voltage ratings . This shouldn’t be an issue with modern-day power banks, but let’s say, for example, your phone battery charges at a minimum of 5V and the power bank used to charge it is <5V, say 4.5V, the phone won’t even charge in most cases, and not only that, but whatever juice you have left in your phone will eventually drain out.
2) Poor Quality Internal Circuitry
With the influx of cheap power banks making far-fetched claims in the market, it’s no surprise that manufacturers may cut corners on quality to reduce costs . More often than not, the internal circuitry is the first to be compromised, even if it means improving aesthetics to boost sales.
Using a power bank with poor quality internal circuitry immediately puts your device at risk. While most modern mobile phones have built-in safety measures to prevent damage, they aren’t completely foolproof.
Inside view of a cheap power bank.
You don’t necessarily need to pry open the power bank to check its quality, but clues like a suspiciously low price compared to the claimed features, aggressive marketing tactics , and a lack of brand reputation can be good indicators of a potentially risky product.
3) Lack of Compliance with Safety Regulations
The most crucial part of a power bank is inarguably how safe it is in real-world scenarios. When buying one, look for certification marks that show the product complies with safety standards and has undergone testing to ensure those standards are met. Look out for standards and directives like UL , RoHS , WEEE , and FCC .
An unsafe power bank can easily damage your device.
4) Poor Quality Charging Cables
In some cases, even with the right power bank, there might be issues with the intermediary: the cable. This charging cable acts as a bridge that supplies electrical current from the power bank to your device. If the cable mismatches your device or, worse yet, doesn’t comply with safety standards, it can just as easily damage or degrade your smartphone’s battery.
An unsafe cable is equally as dangerous as an unreliable power bank.
Make sure that the charging wire you choose is high-quality and follows set standards. Try and go for manufacturers that are reputable and have an established standing in the industry with a reputation for quality and safety.
How to Charge Your Phone Properly?
It’s important to note that regardless of the power bank you use, certain charging habits can make your battery degrade faster over time. One of the main disadvantages of Li-ion batteries is that they gradually lose capacity over time . This is why, it eventually boils down to the user to slow down this process as much as possible.
1. Avoid Full Charge Cycles
Try and prevent charging in full cycles . Instead charge your phone in intervals from when the battery percentage is 20% up to 80% . This would not only help elongate the battery health, but also with fast charging support in most phones nowadays, charging in full cycles is unnecessary in most cases.
2. Avoid Charging in Extreme Temperatures
Avoid charging your phone in extremely hot or cold temperatures . Keep in mind that the phone’s battery will generate additional heat while charging , even if the outside temperature doesn’t feel too hot. Modern smartphones usually now come with built-in safeguards and will automatically refuse to charge if they detect really high internal temperatures.
Try and avoid charging in extreme conditions.
3. Use Certified Chargers and Power Banks
This couldn’t be stressed enough—use good quality charging hardware. This is because a charger is an important part of shaping your smartphone experience. You might not realize it when using a newer device, but poor charging habits and hardware can damage it sooner than you think.
It’s not strictly necessary, but try to use the manufacturer-recommended hardware for charging all of your devices. For instance, popular companies like Samsung , Apple , and Xiaomi have their own dedicated charging solutions , which are not only safer options but also integrate better into the overall ecosystem.
Apple’s MagSafe Battery Pack
In recent times, charging methods and hardware have become much more sophisticated and smarter. In most cases, the phone itself knows when to stop charging , even when plugged into a charger. Some phones will automatically detect dangerous chargers or power banks and refuse to charge.
Phones also now have the option to smartly charge up to only 80% , and since they learn your charging habits, they gradually charge from 80% to 100%, especially when they expect that you’ll unplug the phone soon.
Best Power Bank Recommendations
Now that we’ve covered what to consider when buying a power bank, let’s look into some of our recommendations. We’ll see what each option brings to the table to help you choose the best one for your needs, that suits your budget.
1.Best Under $50: Anker Portable Nano
The Anker Portable Nano comes in at almost $30 , offering 22.5W of fast charging and a 5,000mAh battery capacity.
Anker Portable Nano ($30)
While it may not be the fastest charger or have the most capacity, it’s very small, lightweight, and easy to carry around . On the plus side, its design allows you to use your phone while simultaneously charging it, and it plugs in directly to your phone via USB-C , so there’s no intermediary to worry about.
2.Best Under $130: Anker 737
The Anker 737 comes in at almost $110 , offering 140W of back and forth charging support and a 24,000mAh battery capacity.
Anker 737
This power bank is priced a bit higher for its feature set, but offers great quality and a robust build , which is exactly what you may need for a device coming in at 1.4 pounds . It can charge itself in less than an hour and is plenty to refuel not just your phone, but also any laptop you may have.
It also has a digital display that shows its remaining battery percentage , wattage output from each port, time remaining to charge the device connected and the charge cycles remaining.
3.Best Overall: SHARGEEK Storm 2
The SHARGEEK Storm 2 comes in at almost $200 , offering 100W of charging support and a 25,600mAh battery capacity.
SHARGEEK Storm 2
The see-through design of this device is what makes it stand out from the rest. Not only that, but it has a decent battery capacity, enough to charge most of your accessories simultaneously, at least once. It also packs an IPS screen, with information such as the battery remaining , input/output wattage , current , voltage , battery temperature and operating time .
Conclusion
While charging your phone via power banks may not be a risk in itself, it is important to understand and look at the different kinds that are available on the market today. Some are totally normal to use, while others can straight up kill your smartphone’s battery.
The power bank you choose should be manufactured by an established manufacturer known for adhering to their claims (look out for aggressive marketing tactics). It should feature enough safety standards and requirements to fully charge your device and should be made of robust materials to ensure safe operation.
No, that is certainly not the case. You’ll find power banks priced at $50, and at the same time $200 boasting the same battery capacity. It’s important to factor in the PCB quality, the internal circuitry, damage protection, fast charging, and more when looking for a power bank.
While most modern power banks don’t damage your battery, it’s important to check what quality of devices you’re using to charge up your phone. Try and use an alternative source for some time and check to see if the issue persists.
How to Fix “Printer is in an error state” Issue?
- Recognizing the importance of a printer’s duty cycle is crucial for choosing a device that matches your print volume needs. Staying within this limit ensures the printer operates efficiently and prolongs its lifespan, minimizing the risk of maintenance issues.
- Proper humidity, temperature, and cleanliness management can significantly enhance printer performance and maintain its duty cycle, preventing unnecessary wear.
- Enhancing a printer with upgrades like additional memory or better mechanical parts can improve its workload handling and extend its practical duty cycle, boosting overall durability and efficiency.
When choosing a new printer, you might come across the term “ duty cycle ” in the specifications. This guide will explain what a duty cycle is, why it matters, and how it can help you choose the right printer. We’ll keep things simple so you can easily understand how to use this information when shopping for a printer.
- Printer Duty Cycle: What It Means and Why It Matters?
- Why the Duty Cycle Is Key to Choosing the Right Printer?
- Duty Cycle vs. Recommended Monthly Print Volume: What’s the Difference?
- What Happens If You Ignore Printer Duty Cycle Recommendations? ↪ Real-World Scenarios: Why Exceeding the Duty Cycle Can Cost You
Printer Duty Cycle: What It Means and Why It Matters?
What is the meaning of Printer Duty Cycle?
The printer duty cycle represents the upper limit of a printer’s capacity—how many pages it can reliably process in a month before the risk of wear or malfunction increases. This figure is crucial for understanding printer performance limits and ensuring that your chosen printer can handle the expected work volume.
Manufacturers determine a printer’s duty cycle through stress testing, where the printer is pushed to its limit to identify how many pages it can produce each month before malfunctioning. These tests help set a reliable performance gateway for users.
A printer’s duty cycle is like a car’s speedometer—you wouldn’t drive a car at top speed all the time, and you shouldn’t push a printer to its maximum duty cycle. Doing so can lead to quicker wear and tear, more frequent maintenance, and a shorter lifespan.
If you’re unsure whether to choose an inkjet or laser printer, this detailed guide compares both options to help you make an informed decision.
Why the Duty Cycle Is Key to Choosing the Right Printer?
The Importance of Duty Cycle in printer selection
Knowing the duty cycle is essential when choosing a printer, as it determines how well the device can handle your monthly print volume without excessive wear or maintenance.
Here is why the duty cycle matters in printer selection:
- Fit for purpose: Selecting a printer with a suitable duty cycle ensures it can handle your monthly printing volume efficiently, reducing stress on its components.
- Longer lifespan and better performance: Staying within the duty cycle ensures optimal print quality and speed while prolonging the printer’s life, avoiding frequent breakdowns.
- Cost efficiency and reduced downtime: Operating within the duty cycle minimizes the need for repairs and reduces operational disruptions, managing long-term costs.
Duty Cycle vs. Recommended Monthly Print Volume: What’s the Difference?
Duty Cycle vs. recommended monthly print volume
The recommended monthly print volume is the optimal number of pages a printer should handle each month for the best performance and longevity. Unlike the maximum capacity indicated by the duty cycle, this number guides regular usage, ensuring the printer operates efficiently without excessive wear.
If your print volume regularly exceeds the recommended amount but stays within the duty cycle, the printer may operate safely in the short term, but it could still experience accelerated wear and reduced lifespan over time.
In such cases, consider upgrading to a higher-capacity printer or spreading print jobs across multiple devices to ensure long-term performance.
Here are the differences between the duty cycle and recommended monthly print volume:
- Duty cycle: Represents the maximum number of pages a printer can handle in a month without breaking down. It assesses the printer’s upper limit.
- Recommended monthly print volume: Suggests a practical, workable number of pages to print each month to keep the printer in good condition over its lifespan.
What Happens If You Ignore Printer Duty Cycle Recommendations?
Consequences of ignoring Duty Cycle recommendations |AndranikHakobyan via Canva
Ignoring the duty cycle limits poses more severe risks than exceeding the recommended monthly print volume, leading to serious long-term consequences.
While exceeding the recommended volume occasionally may result in additional wear and tear, consistently exceeding the duty cycle can lead to frequent breakdowns, reduced performance, and a shortened lifespan.
Ignoring duty cycle limits leads to frequent breakdowns, reduced performance, and increased maintenance, ultimately shortening the printer’s lifespan and causing more frequent operational downtime and higher repair costs. Long-term, pushing a printer beyond its limits leads to greater financial burdens due to premature replacements and inefficiencies.
↪ Real-World Scenarios: Why Exceeding the Duty Cycle Can Cost You
For example, in a busy law firm, overlooking duty cycle limits during a high-stakes period could cause a printer breakdown just before a critical deadline, delaying crucial legal filings and ultimately compromising client service.
For small businesses, consistently exceeding a printer’s duty cycle can lead to costly emergency repairs or premature equipment replacements, straining financial resources.
