I got this from a large UK supermarket chain called Sainsburys but hadn't got round to doing a test on it yet. Quite well constructed with LG cells, an unusual control PCB with a few tricky to trace components and a thermistor for battery temperature monitoring. Notable features are the decent control chip they seem to have used and the matching beefy inductor.
External cell capacity test is a respectable 6400mAh. (3200mAh per cell)
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11 thoughts on “A look inside the duracell pb2 power bank.”
  1. Avataaar/Circle Created with python_avatars Ryan Smart says:

    If I press and hold my one of these all the charge lights flash consistently :L

  2. Avataaar/Circle Created with python_avatars Albert Jin - OFFICIAL CHANNEL says:

    I stil have the higher Milamp medium size power bank with 2 usb port and it stil works well but the output and input label is starting to deteriorate

  3. Avataaar/Circle Created with python_avatars I still shower says:

    So, yea… When my boy was 8, I gave him a few drops of Jager, just because the taste would be what he associated with alcohol… 20, and still hasn’t had alcohol…

  4. Avataaar/Circle Created with python_avatars BartoszXIV says:

    In my powerbank usb port has just given up and it doesnt charge the phone anymore… this is my 3rd powerbank and USB port is always the first thing that fails… planned obsolesence on high level. Dont buy this crap

  5. Avataaar/Circle Created with python_avatars bikkiikun says:

    If you want to build your own powerbank, with this injoinic chip (or its cousins), you'll find several pre-buil pcbs. But of curse you can get the chip and follow the reference designs in the datasheet.

  6. Avataaar/Circle Created with python_avatars Miek Buchanan says:

    Not all of us want you to “stab the battery.”

  7. Avataaar/Circle Created with python_avatars Sean Redmond says:

    Hey Clive. I have a few of these for use at work and one of them recently is completely dead. Holding the button to reset it doesn't work. Trying to charge it does nothing, trying to use it does nothing, think it's completely dead. Anything you could suggest I try before I go and spend another £36 on one? Failing that you're welcome to it for a video?

  8. Avataaar/Circle Created with python_avatars Daniel Moraes says:

    i disassemble now my duracell 10k mah and use the 3 cells, 2 for my air pump that was dead, and 1 for my racket mosquito killer

  9. Avataaar/Circle Created with python_avatars Outsider says:

    i have a questions thats may dont have correlation with all good information that you share on the video, btw, many thanks for that!
    my question is, its safe charge a smartwatch with this powerbank? the original charger off this watch indicates 5v and 1A, i dont have courage to test

  10. Avataaar/Circle Created with python_avatars Crazyreviewer123 says:

    I have the same duracell 6700 portable charger. I definitely get compliments from quite a few people when I pull out this charger. Unfortunately this is my second duracell I'm on the third one now because I'm experiencing every few months or so they turn themselves off or they charge my OnePlus 9 phone for a minute then the charger lights all go out even when fully charged. This is not my everyday portable charger as I can't really trust it in terms of reliability yet my Anker 6700 that's 4 years old is working 0 issues. Is there a way to fix these chargers they are cool looking portable chargers but that won't help if they keep breaking down on you. Has anyone else had these Duracell chargers break down I'd be interested to hear from you

  11. Avataaar/Circle Created with python_avatars nbKOT says:

    Іван зробив?
    Зробив.
    Що зробив?
    Поламав н@&уй!

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