do portable chargers ruin your battery

Do Portable Chargers Ruin Your Battery: All You Need to Know

Portable chargers don’t ruin your battery, if you use them well.

The idea of your mobile device’s battery draining in the middle of an important call can be very infuriating. To avoid this, many people turn to power packs, otherwise called portable phone chargers.

Portable chargers are a must-have for anyone living a mobile lifestyle. Whether you’re on the go all day, or just want to be prepared in case your phone battery dies, these handy devices will have you covered!

You might be wondering if using portable chargers is going to ruin your battery life and make it worse over time. This article will discuss how power banks can affect your device’s battery life and how quality matters.

Do Portable Chargers Ruin Your Battery?

The answer to this question is both yes and no, depending on what you do with it. If you keep it plugged in all day, then the answer is yes.

However, if you leave it plugged in for only an hour or two at night when you go to bed or while you’re at work during the day, then your battery should be fine. 

When you’re not charging your phone through a USB port on your computer or wall outlet, make sure to charge it by plugging it directly into its power supply since this will help preserve its lifespan as well!

How Do Portable Chargers Impact Battery Life?

A decent portable charger from a notable manufacturer, coupled with the proper charger, shouldn’t cause any problems.

Quality power banks are also powerful, and they will safeguard your phone from overcharging. Even if you leave your phone plugged in when it’s fully charged, the battery won’t be harmed.

Low-quality power banks, on the other hand, might not be able to charge with the same voltage as your phone needs and end up delivering a higher or lower voltage which can cause real damage to your phone’s battery. 

In addition, they might not be able to prevent your device from overheating and overcharging. A high-quality portable charger will continue to charge the battery without putting unnecessary strain on it.

A portable charger from a reputable company can extend your phone’s life expectancy by protecting the battery from damage.

How to Use a Portable Charger Safely and Effectively

If you’re using a portable charger for the first time, ensure that you read the manual before connecting your phone. If possible, use a voltage meter to check that your charger is outputting the right voltage. 

When using a portable charger, it’s helpful to only charge your phone when the battery is between the ranges of 20% to 80% percent. This will help protect your device from damage caused by overcharging.

If you keep charging until your phone reaches 100%, then you’re putting extra stress on its internal components which can cause it to degrade at a faster rate than normal.

Don’t charge your device overnight or leave it plugged in for too long if it’s already fully charged. Avoid using cheap knock-off chargers whenever possible. 

Don’t leave your device plugged in if it’s fully charged or has a high temperature. Batteries can get damaged if they are too hot, so you shouldn’t plug your devices into a power bank when they feel warmer than they should be.

do portable chargers ruin your battery

What to Look for in a Quality Portable Phone Charger

When you’re looking for a quality portable phone charger, it’s important to look for features that will protect your phone’s battery.

Portable chargers don’t need to be expensive, but they should offer you several protection features. These include:

Compatible Voltage Output

Portable chargers work by taking electricity in and storing it in a battery. The number of volts they produce is the number that’s released into your phone when you plug it in. 

Just like laptops, phones require specific voltages to charge their batteries. Some ports put out five volts, while others might be closer to nine. If you plug your phone into a charger with too high of a voltage, the battery will explode.

To keep your smartphone safe, look for a portable charger that can provide compatible voltages. You should notice this number on the little black box or in the instructions that come with it. 

Usually, chargers are compatible across similar brands and types of phones, so you can rely on them to charge a Samsung Galaxy without damaging it. However, be aware that there are different standards for AC adapters and USB ports, so make sure your charger is compatible with your device before plugging it in.


Another important factor is the milliampere-hours, or mAh, which tells you how long that electricity will last before it needs to be plugged in again. 

Portable chargers that have higher numbers allow you to charge your phone even though they are small. For example, an iPhone battery is about 1810 milliampere hours, so you should look for a portable charger with at least this much power.

On average, your phone will need to be plugged in for several hours before it has enough electricity stored up to work again.

However, you can reduce this wait by getting a portable charger with good reviews. Some models come with extra features that make them more efficient or safer to use, like built-in protection from short circuits and overcharging.

Finally, the amount of power that your portable charger puts out will affect how fast it can charge up your phone. If you have a smartphone with high-end features like an HD camera or GPS, then you’ll need a portable charger that can keep up with all of these components!

Amps Output

Portable chargers with higher amps output deliver more electricity to your phone over shorter periods of time. When you’re looking for a quality portable phone charger, it’s important to look at the amps (A) output. 

A good charger will have enough amps to charge your device quickly while also offering protection from overcharging and overheating.

Portable chargers work by converting electricity into stored energy within a battery. The number of amps (A) output represents how much that stored energy is released into your phone to charge it.

If you need a portable charger that will keep your phone charged during long trips or heavy use, then look for one with higher amps (A) output. 

Chargers with this capability can provide more power in less time, which is especially helpful if your battery is low when you’re ready to leave the house. However, chargers with higher amps output usually cost more than those with less power.

You should also be sure to get a model that has good reviews on Amazon or another reputable website, that way you know that they work and that other customers agree with the quality and features.

Surge Protection

Although it’s unlikely, the electricity coming out of your portable charger can spike due to outside circumstances like extreme weather or faulty wiring. 

Before plugging in your device, check that the voltage, amps (A), and milliampere-hours (mAh) of your portable charger all match up with the requirements on your device. 

Make sure that you’re not using a charger with too high or low of output and that it also has good surge protection to protect you from unexpected changes in the power supply.

Surge protectors work by detecting when electricity is fluctuating beyond acceptable levels and immediately redirecting excess power away from your device.

This is especially helpful if you’re charging your phone in areas with bad weather or poor electricity supply, which can cause sudden spikes in power levels coming through the outlets.

Tips for Preventing Damage to Your Phone’s Battery From Using a Portable Charger Too Often 

  • Don’t charge your phone if the battery is already fully charged
  • Don’t leave your phone plugged into a charger overnight unless you need this feature or are expecting an important call or text
  • Don’t leave your phone plugged in if it’s experiencing a high temperature
  • Avoid using cheap knock-off chargers that can damage your phone’s battery
  • If possible, use a voltage meter to check the charger is outputting the right voltage
  • Ensure you read the manual before connecting your phone.


In a nutshell, if you’re looking for a way to charge up your phone when you’re on the go, a portable charger has many benefits and very few drawbacks!

They offer an output voltage of around 5V and typically safeguard your phone from overcharging and overheating. 

Although this doesn’t imply that you should keep your gadgets plugged in at all times, it does indicate that even if your device has been fully charged, these portable power banks aren’t overcharging it or damaging its battery life.

Now that you know how to ensure that your power bank doesn’t ruin your battery, you can read this article to know how to charge a power bank while simultaneously charging your phone with pass-through charging.

We also have here the list of best portable chargers from a well known brand which you can buy according to your needs!