Is it safe to use a power bank to charge smartphones?

Today almost every smartphone users carry a portable source of power – the Power Bank. But is it safe to use a power bank rather than the wall charger that came with your smartphone? Is it okay to charge your smartphones using power bank?

Should you charge your smartphone with power bank?

Take out your smartphone charger and check the voltage on it, it will be 5V. Now check the power bank that you might be using, it will also be 5V or slightly higher. If this is the case it is good enough. If the power bank is less than 5V then it will not charge the smartphone in fact it will drain the smartphone battery.

You usually will get 5V / + Power banks so you really don’t need to worry. Moreover in case you are using a power bank and for some reason handset is not charging but the handset battery is draining then you should stop using that power bank.

Is it safe to charge your smarphone with a power bank?

How to use Power banks for overnight charging

New smartphones come with cutoff technology that stops the charging process as soon as battery level reached 100%. If you are using such smartphone you can use Power Bank or even wall charger to charge overnight, does not really matter.

How to check if your smartphone comes with battery charging cutoff technology?

Use the charger that came with the handset, charge your smartphone and see what happens when the handset gets fully charged i.e. battery is 100%. If you still see the battery charging icon and/or if there is LED notification and the LED is on then the smartphone does not support cutoff.

Ideally with cutoff tech the smartphone charging should stop at 100% even when the power is connected.

Now if your smartphone does not support cutoff it would make sense to stop the charging process once the battery reaches 100%. Doing so will improve battery life and health. And if cutoff is not supported better not put the handset on overnight charging.

Now you can use a power bank effectively in case your handset does not support cutoff. For this you need to use power bank with battery that is near about the same capacity as your smartphone for example if you smartphone is using 2000 mAh battery go for power banks that come with 2000 to 4000 mAh battery.

The idea is by the time your smartphone gets charged to 100% the power bank batteries will also get depleted. Once the power bank battery is exhausted the charging will stop.

13 Comments

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