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What to do if your power bank keeps disconnecting and turning off

One of the more common issues power bank owners have is that their device keeps disconnecting and turning off after 30 seconds or so. This can be quite frustrating, especially if you’re in a hurry or if you just bought the portable charger. Here are some troubleshooting ideas that might shed some light on why your power bank is acting this way.

The first thing you can do is to turn the power bank of and then on again

power bank keeps disconnecting and turning off

If that didn’t work, have a look at the following suggestions.

Scenario 1: the power bank turns off while it’s being charged

In the first scenario, you are charging the power bank using a wall charger and while doing so it keeps turning off. The only connected device to the power bank is the charger itself. Here’s what to look for:

  • Make sure that the charger is working accordingly and can supply enough power. Test the charger with a different device such as a smartphone and make sure it works properly.
  • Make sure that the connections are good. Check that the charging cable does not wiggle as you insert it in the power bank charging port
  • Clean your charging port and take out any debris that might have accumulated in there such as dust or lint.
  • Use a high-quality charger and charging cable. Low-quality products might negatively influence the charging experience.
  • It’s possible that the power bank is already full and auto disconnects in order to avoid overcharging.

Scenario 2: the power bank disconnects while it charges another device

In this scenario, the power bank is connected to a different device such as a smartphone, which it should charge. However, after a short amount of time, it simply powers off and does not charge the connected device. Here’s what to look for in this scenario:

  • If the device you’re trying to charge requires a low power input as in the case of a smartwatch, then it might be possible that the power bank cannot deliver the required power. In order to charge devices with low power requirements, power banks need a feature called “low-current charging” or “trickle charging” but not all power banks come with this feature. You can filter after portable chargers that do come with this feature on our power bank reviews page.
  • Make sure that the power bank is at least partially charged. If a power bank runs out of power, it won’t be able to charge other devices. You can check the charge status using the LED power indicators which are commonly found on one of the sides of the portable charger.
  • Check that the charging cable is properly connected. Make sure that there are no wiggly movements. Properly clean the charging ports.
  • The device that needs charging may be already fully charged. In this case, some power banks do automatically shut down and stop delivering power.
  • If be power bank gets very hot, it might trigger an internal safety mechanism that stops the power delivery.
  • The power bank is very old and may have reached its battery lifespan. Usually, power banks are designed to last between 500 and 1000 charge cycles after which the batteries start degrading and eventually become unusable.

If after going through all these troubleshooting ideas your power bank keeps disconnecting, then you should take into consideration that it may have an internal issue. In this case, if the power bank is still under warranty, consider returning it. Otherwise, please take it to an electronics repair shop and have it checked out.

Here are some of the reasons a power bank might stop working ahead of its average lifespan:

  • it got dropped from a considerable height
  • it got hit with a hard object
  • it got submerged in water or was stored in a very humid place
  • it got stored in a very hot place (such as on a car dashboard during a sunny and hot day)

All these issues may have profound negative impacts upon the power bank and might cause it not to work anymore. Think back if any of these happened to your power bank.

But whatever the circumstance, please do not try to take the power bank apart yourself, unless you have extensive electrical knowledge! Mishandling a power bank can lead to injury or property damage, especially considering that Lithium-ion batteries are not always stable and have been known to explode.