7 Common Questions about Power Bank Portable Charger Safety

Over the past 3 weeks, I have been receiving emails from our clients with most of them focusing on power bank portable charge safety.

The truth is, modern power banks feature high quality and advanced lithium ion or lithium polymer batteries. Besides, they also come with a circuitry that protects both the device and users.

All you need to do is buy these accessories from a trusted and reputable manufacturer.

Fast charge power bank

Different types of fast charging power banks

1.     Can a Power Bank Portable Charger Reduce the Lifespan of My Phone’s Battery?

The answer is No.

Let me explain:

The main charging system is in your phone and it doesn’t matter the source of the charge. However, it will also depend on the quality of a portable power bank.

High quality and certified power banks will not damage your phone’s battery. As long as the output of your smartphone power bank is 5.1V to 5.4V, the battery will be safe.

Even if you’re using a high capacity power bank (I’ll discuss later), it cannot damage the battery of your phone. This is because modern smartphones or tablets have a cutoff feature.

Therefore, once the charge reaches 100%, it will stop further entry of current into the battery. This will ensure the battery remains safe.

By this, I don’t imply that once your battery is full then you should leave it connected to the power bank. No, if possible, you should unplug it.

Using a power bank to charge a phone

Using a power bank to charge a phone

Again, a power bank that is less than 5.1V may end up drawing power from your smartphone and I know you wouldn’t wish this to happen.

Furthermore, I have seen quite a number of people complaining about overheating and swelling of smartphone batteries as a major concern when using a power bank.

Well, this will depend on the type of an external battery pack you are using. That is, in case the USB rating of your power bank is more than 5.4V, then you should unplug it when the phone is 75 to 85% of the full charge.

This is because with such a high voltage, even if the phone’s charging system tries to reduce the current flow, the amount that enters the battery will still be high. As a result, there will be overheating and gassing, which always results in swollen battery.

I hope this helps and in case you have more questions on this, feel free to ask.

You can also read this article during your free time: Tips to Increase the Life of Your Phone’s Battery.

2.     How Can I be sure that a Portable Power Bank is Safe by Looking at it?

Well, it’s a very interesting question indeed.

It is the responsibility of the manufacturer to test all components of the smartphone power bank to ensure they are safe. This is why I insist on buying branded power banks as opposed to the generic ones.

Branded power banks are safe and reliable since the manufacturers are always after building a brand name in the industry. This implies that they feature some of the best safety technologies such as:

  • Cut off power that prevents overheating
  • Quick charge
  • High capacity, among other features

Here is an example of such a portable power bank:

waterproof power bank

This is a rugged power bank that is waterproof, dustproof, shockproof and drop resistant. Furthermore, it is also fast charging and high capacity power bank by Vin Technology.

Apart from these, the power bank should have a sticker or information about quality compliance, such as CE, RoHS, UN38.3 and UL 1642 certifications.

From these certifications, you’ll know clearly that the portable power bank has passed all the rigorous quality tests.

3.     What is the Capacity of Power Bank Portable Charger? Should I Worry about It?

No, you shouldn’t and it has nothing to do with the safety of a smartphone battery.

Here is exactly what you need to know about portable power bank capacity:

First, I want you to review this power bank:

waterproof power bank specifications

Waterproof power bank specifications

The power bank capacity refers to the amount of charge this accessory can store. It is measured in mAh and as you can see in the above power bank, the rating is 1800mAh.

So, when you connect a power bank to a smartphone, it will transfer some charge to the phone. In most cases the value indicated on the power bank is not always the exact capacity.

During the power transfer and conversions, there is a certain amount of energy that is lost in the process. Therefore, you should only be worried about the efficiency of this process, which the manufacturer should clarify.

Again, whether you go for a high capacity or low capacity power bank the charging speed only depends on the output current. Depending on the power bank design, the output current may vary from 500mA to 1000mA.

Generally, a high capacity power bank will provide more charge over time than a low capacity power bank.

Remember, the power bank capacity will determine the number of phones it can charge. However, all these have nothing to do with the safety of either smartphone or users.


4.     How Can I increase the Service Lifespan of a Power Bank?

First, you should avoid keeping power banks in environments with either extremely low or high temperature.

Two, whenever you want to use the power bank in a car kit, start the engine first. Normally, if you connect the power bank first, the peak output power may damage the power bank.

LED indicatorys on a power bank

LED indicators on a power bank

Third, never store a power bank portable charger when completely drained since doing so reduces its capacity. It is advisable to leave at least 50% charge.

Again, do not disassemble, break, dispose in fire, drop or break the power bank. Always keep it away from children.

By doing so, your power bank will remain safe all the time.

5.     How Long Will I Use my Power Bank?

Well, this will depend on the brand, class or capacity of the power bank portable charger. As long as you store it with a 50% charge, it can be cycled for 300 to 500 times.

Different parts of a power bank

Different parts of a power bank

That is, even after that period, it should be able to retain between 80 to 90% of its original capacity. Still, you can use it until it reaches a point where it can no longer hold a reasonable amount of power.

Normally, high quality power banks will still remain safe for use during this period.

6.     Why Does My Power Bank Take Too Long to Charge?

This will depend on the technology. Remember, there are fast charging power banks available in the market.

Quick charge 3.0 technology power bank

These are quick charging power banks with a 3.0 technology.

Furthermore, the time it takes to charge a power bank will depend on the capacity and input current. For instance:

  • A 6600mAh will take 3 to 5 hours while a 2200mAh takes 2 to 3 hours
  • Power banks charge faster when you use a wall charger as opposed to a computer.

I hope this helps.

7.     I am Unable to Turn On My Power Bank, What Could be the Problem?

Quite a number of people do not read product manuals. Please be sure to do so.

Remember, power banks may come with different features that are not obvious to understand.

Slim power bank

Slim power banks

In case you experience this problem, it is important to consider the following:

  • Check whether the power bank is fully drained. If so, then you have to recharge it.
  • The power bank could have automatically turned to sleep mode (i.e. cutting off power automatically).
  • Check whether you’re using the correct cables

In case it doesn’t respond to any of these procedures, then you need to contact the manufacturer for further clarifications.

With all these in mind, I am sure you can benefit more from your power bank portable charger. Don’t let low power ruin your day when you can access a reliable solution.

For more questions or inquiries about power banks, feel free to contact us.

By | 2017-08-02T22:56:22+00:00 August 2nd, 2017|Buy the correct, Power Bank Technology|0 Comments

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