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Troubleshooting Anker PowerCore Portable Charger Problems

Max holds a B.S. in mass communications from SIU, an M.A. in communications from U of I, and is pursuing an MBA from Webster University.

Anker PowerCore 20100

Anker PowerCore 20100


Anker's line of PowerCore portable chargers can charge any USB device, and leverage high-capacity battery cells that make it possible for some of their devices to hold enough energy to power up your iPhone multiple times over before you'll need to recharge it. Having one of these devices handy can help ensure you won't have to worry about your portable electronics running out of steam while in an important meeting or out with friends. Common problems with the PowerCore line of chargers are typically associated with powering up the charger, charging connected devices, not understanding the meaning of the LED lights on the device, and issue with dirt and other debris getting into the USB ports.

PowerCore Won't Charge

  • If possible, use either the Micro USB cable that came with the Anker PowerCore charger to power it back up or a certified third-party cable. If you're using a non-certified, third-party cable, the Micro USB connector may fit, but it may not power up your portable charger. Additionally, third-party cables can also potentially do a great deal of harm to your device as they don't go through the required testing that certified cables go through.
  • Ensure the outlet you're connected to is working. If possible, try connecting another device to that outlet to see if it works.
  • If your portable PowerCore charger is not charging quickly, try using another wall charger. A two-amp charger will fully recharge your device over 12 hours. A higher-output charger will power up your device faster.
  • If you've noticed that the PowerCore doesn't charge while you have devices connected to it that are charging, that's because it's not possible to do that. This is not good for the battery, and as a result Anker doesn't make it possible for the user to do that.

Connected Devices Not Charging

  • If the situation is one where devices connected to your Anker PowerCore won't charge at all, ensure that the charging cable is firmly connected to both the portable charger and the device you're attempting to charge. Additionally, try using a different USB cable in the event there may be issues with the cable you currently have connected.
  • If the connected devices aren't charging quickly enough and you have multiple devices connected, remember that when multiple devices are connected the charger is outputting the same amount of power, but it is splitting it between the two devices, so it will take twice as long.

What Do the Lights on My PowerCore Mean?

There are a couple of different reasons the LED lights on your Anker PowerCore charger could be flashing:

  1. If your portable Anker charger is connected via the Micro USB cable to a wall outlet and charging, a percentage of the LED lights on the device will light up, illustrating the percentage of the device that is charged and ready for use. All of the lights on the portable charger will go dark when the device achieves a full charge.
  2. If there are devices connected to your PowerCore charger, you'll notice that the LED display shows you a percentage that illustrates how much of the battery is available for use.

Environmental Elements

While the Anker PowerCore is a fairly rugged portable charger as a result of a strong outer shell, dirt, sand, and other environmental elements can get lodged in either the USB ports or the Micro USB charger and cause a variety of issues associated with charging. The unwanted debris may result in sporadic charging of connected devices, or sporadic powering up of your charger itself. Additionally, over time, the build-up of dirt and debris can do serious damage to both your portable charger and connected cables, potentially resulting in both not working further down the line. As a result, it's important to keep your Anker charger away from elements as best as possible.

In the event that you do see visible dirt and debris inside of your charger, do not attempt to remove it using a paper clip, knife, or any other sharp object, as those can also damage your device. Try using a Q-Tip or other soft object to try and clean out any debris.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.

Questions & Answers

Question: My ANKER external battery's lights flash randomly when it is charging. I have noticed the battery itself feel a little convex on the top. Do you know why this is happening?

Answer: I've never encountered this with my charger, but I wonder how old it is and how long you're leaving it plugged in for. I wonder if it's getting too hot for too long. If you're leaving it plugged in, I would unplug it when you're not using it. The only problem is that the damage may be done. You may want to reach out to Anker support to see what the random blinking light means.

© 2016 Max Dalton


Philip on May 08, 2020:

I bought one, i had used it once and then fully charged it, but then when i was about to use it, it doesnt charge anymore

NATHAN WILLIAMS on May 08, 2019:

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I have bought a wireless anker pad plugged it in the light flashed for 3 seconds then went off and no light is coming on since its been charginv for 12 hours with the lead that came with it and the outlet lead charges my phone so it works.. how do i know if its faulty the anker or even charged no light or button is on this at all!

Bob on April 24, 2019:

when I plug my phone in to the charger it says this device not supported, any suggestions

Teresa on April 06, 2019:

My Anker batter is not charging. I have tried several different wall outlets, all of which work. I am using the cord that came with the battery. I have turned the batter off and then plugged it in. Any ideas?

Sapito on February 15, 2019:

I have an Anker PowerCore 13000. It worked great... for less than 6 months. Now I can plug it all day long (or more) but it will never exceed more than half of the charge (2 leds). Even that isn't real, because it can charge my iPhone 3 times, max. So, it isn't better than a chinese powerbank.

SuperMarioMC98 on July 24, 2018:

i have an anker 10000 power core and i just use it to charge my ps vita the first times i charged my vita i was amazed with its speed and just saw the specs 36 W/h better 3 times than an ipad pro charger but now its VERY SLOW EVEN my vita charger is much faster i tried using the vita original cable it didnt work at first but second time it did but no longer charged fast as usual i tried connecting the cable back to the vota power brick to ensure that the cable is not damaged and it worked so this is how the retailer lured me with its specs to buy this 100$ S H I T

Nick on March 18, 2018:

Mine stopped charging after a week... don't waste your money

Larry on February 28, 2018:

I tried to boost my car with Anker Model 1501. It appeared to be fully charged but would not perform. In fact, it went completely dead after. I wall charged it until all four lights went on. Now the LCD light will not go on and it will not even charge my phone. I had a horrible thought - did I connect the wrong cables to my cat battery? Did that put my charger to death? After an alternate boost my car works fine. Thankfully!

Chris on February 15, 2018:

I currently am using the Anker Powercore 20100mAh and using it to charge my Pixel 2 phone. It can charge when still on a table but the slightest movement (even picking up the phone) will stop it from charging. The cord in all the way in on both ends. Also, even when it does charge, it charges very, very slowly.

Max Dalton (author) from Greater St. Louis, Missouri on February 06, 2018:

Fingers crossed. We've got a few of them, and haven't run into any issues yet.

Max Dalton (author) from Greater St. Louis, Missouri on February 06, 2018:

Yes, this ultimately should be fine. However, it's generally not a good idea to leave cables plugged in that you're not using. It does introduce a fire hazard, and probably results in a few extra cents on your electric bill.

Why on January 12, 2018:

I charged it up once and it worked perfectly, since then it hasn't charged back up at all. Had to return it because it isn't supposed to be a 1 use product. Tried switching up cables and outlets etc etc

Max Dalton (author) from Greater St. Louis, Missouri on December 25, 2017:

That is weird. Try a different cable.

GG on December 21, 2017:

ipone 6s says Anker E1 power bank is unsupported when it worked previously??

Ibrahim on December 19, 2017:

My new Anker power bank (A1215) doesn't stop charging automatically when the IPhone fully charged

Graham on November 23, 2017:

Owned two ankers the 21600 and the 10000. Very dissapointed first one the charging brick at first was fine after about a month of use one of the usb's stopped working and it would always discharge constantly even if nothing was plugged in, became useless. That one at least came with a wall charger, but now the wall charger doesn't even work at turbo 3 speed it just short circuits and sparks. The 10000 have owned for a week now I charge it all the way up till all the dots are full and the lights turn off completely. Plug it in to charge first 2 dots are gone within 3 minutes of charging my phone, maybe I get half a charge out of it and my phone is 3000 mah. Just a shame they have good specs but terrible quality control.

siavash on November 14, 2017:

hi, i have a a121 powercore that it charge my phone but it does not turn off charging while my device goes fully charcged, is this ok?

Hunter on November 08, 2017:

My model A 2513 Anker charger seems to flip my phone off the charger to the floor.

Mwinga on October 09, 2017:

I have a 16000 series, mine has worked perfect for 2years, recently when I connect my phone it charges it and stops till I press the the button... Is it time to replace or?

ruth on September 08, 2017:

help i have a portable solar charger but i push the on button it goes all blue lines so fully charged but they do not stay on when trying to charge something light just turns green again....very confused what am i doing wrong? Have tried pushing buttons twice to see if that works and nothing...please help

Tiara on August 24, 2017:

Well it's called this anker earbuds are reliable. I've had my earphones for a month into weeks. I only use my earphones when I work out so at most for an hour or 5 times a week. The earphones are supposed to be waterproof because I sweat a lot. I charge my earphones for two days straight and still no response. So I guess I live in a learn because I will not be buying any more products from anker. That your phone should've lasted more than a month and two weeks. I try to hold out from buying Dre beats but I guess I'll be purchasing those ear phones now.

Jay on August 18, 2017:

Used my Anker 20100 only a few times. Tried to charge it up last night and only one bar. Wow, so disappointing. Got Anker quiet keyboard and mouse bluetooth combo as well and after a few use started to get noisy like a regular keyboard. What do you know. First time it's on me. Second, well, it's time to move to a different brand.

Dee on July 31, 2017:

hello, i have the 20100 as well, i charged it last night and its always showing just one bar and disappear.

DEbbie on July 28, 2017:

why is it my anker power bank, the last light while in charging didnt blink anymore ??

Joy on July 18, 2017:

Hi Max

Last Thursday, I got the Anker Astro e1 5200 Ah. I charged it until it got to two bars. Then I tested it out by charging my iPod touch. It did okay till the second light was out. Then I charged the Anker and left it for a few days and now the lights won't come on. Helppppp!! I don't know what to do!!!

d3rx on July 14, 2017:

I have the same problem, I have the Powercore 20100,, when you charge it the led starts at the 4th one as if it's 75% charged but it actually is charging... Tried all the chargers in the house+- no luck. It's a shame I had to change brand because of this.

Khalid on June 10, 2017:

Hello, I have portable anker charger 20100 bought it from Amazon, it was very good for charging Galaxy and Iphone but sadenly it does not accept charging iphone but it charge Galaxy. Help me

Laurel on June 02, 2017:

Anyone encounter this? After 4 or 5 few charges Anker Astro E1 5200mAh my iPhone6 battery keep shows 100% most of the day - late in the day starts slowly to go down and when about 75%, suddenly goes dead. Turn the power back on back up for several seconds it shows 75% and then goes dead again. Wonder if this has anything to do with the charger of is a iPhone issues.

Nakia on May 18, 2017:

I was given an Anker 20100 in November of 2016, and have used it 5 times to charge my phone since December. Today is my first time charging it and after four hours of being plugged in with its original charging cord, the first led is still blinking and the charge hasn't increased at all.

I am going to give it a few more hours before I give up entirely.

Harvey on March 06, 2017:

My anker power bank is charging and shows the battery percentage. I have been charging it for 2 days now and the battery is not getting up but its blinking.

Michael on February 12, 2017:

The 20100 doesn't charge my Samsung Galaxy S3 properly. It turns the phone on and off

John Wayne on January 23, 2017:

@Joe Carey

I had the same problem with my Anker Astro 6700mAh Ultra-Compact Premium Portable Charger.

Have you managed to get it working again?

Jerry davenport on January 20, 2017:

Charger will charge but will not charge my iPhones 6

Thiyagaraj on January 15, 2017:

Hello Max could pls suggest me what to whenever i connect my Anker powercore 20100 to 20w solar panel it draws only a max of 950 mah as against 2.1 amp in the very bright sunlight here in Bangalore India and that to it drops to 250mah when sun shine dips and doesnt get adjusted when the bright sunshine returns

thanks in advance

Ayman on January 15, 2017:

Hi Max

My PowerCore 13,000 would charge for a minute then stops. I don't know what is going on.

Max Dalton (author) from Greater St. Louis, Missouri on January 12, 2017:

Hi Joe,

First, sorry to hear about the troubles you're having with your Anker Astro. We have a few different Anker chargers, and I've always had good luck with them. With some batteries you have to charge them fairly regularly to cycle them and keep them going. It sounds like you used it sparingly, which in the world of chargers can actually be a detriment. I would recommend calling Anker with your issue to see what happens.



Joe Carey on January 12, 2017:

I purchased a brand new unopened Anker Astro E1 5200mAh portable charger on Sept 2015 for $20.

I used it three times to charge my Samsung cell phone for about 20 minutes. I carry it just for emergencies.

But 16 months later now the charger won't charge. It has one blue button which just blinks. I'm using the USB cord the charger came with but I've tried numerous adapters and usb cords. I think the charger is defective but since I didn't purchase it from AnkerDirect there is no warranty. It's an Anker Astro E1 5200mAh Ultra Compact Portable Charger External Battery Power.Model: A1211 SN:O5DEGL

It didn't slowly not take a charge; it just stopped charging one day. But I only used it three times. I think this is last time I ever buy anything Anker.

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