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Power Bank Test Results

  1. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    As promised before, I ran a few charging tests on the Power Bank to see the time it takes, its output mAmps, and how it compares to the standard OnePlus wall charger. The currents were measured using Ampere. The step by step results were as follows:
    Run 1. Power bank charged to 100%.
    1. OPO charged through port 1. 5% to 99%, 980-600 mAmp, 2hours45minutes
    2. OPO charged through port 2. 0% to 95%, 900-600mAmp, 2hours25minutes
    3. OPO charged through port 1. 5% to 42%, 950-0mAmp, 55minutes
    Total charged capacity was 226% of 3100mAmp OPO battery capacity -> Power Bank Capacity was 7006mAmps (70% of advertised capacity)
    Run 2. Power bank charged back to 100%.
    1. OPO charged through port 2. 4% to 96%, 980-600 mAmp, 1hours48minutes (I may have misread the time on this one.)
    2. OPO charged through port 1. 4% to 99%, 950-600mAmp, 2hours40minutes
    3. OPO charged through port 1. 0% to 50%, 950-0mAmp, Didn't notice when it stopped charging.
    Total charged capacity was 237% of 3100mAmp OPO battery capacity -> Power Bank Capacity was 7347mAmps (73% of advertised capacity)
    Wall Charger:
    0% to 99% in 3hours15minutes, similar current as the Power Bank. Someone, in my other post, said that my wall charger may have a problem as their own charger showed an output current of about 1.8-1.9Amps, much closer to the advertised capacity of the wall charger. My Power Bank also showed less than half of the promised output.

    NOTE: As someone said below, keeping the phone "on" while charging skews the result. I'll rerun the tests with the phone "off" to see if it makes a big difference.
     
    Last edited: Apr 8, 2015

    #1
    jaypatel315, Root, matanp and 8 others like this.
  2. leemartin
    Lollipop Apr 8, 2015


    #2
    kennyquach and bishs like this.
  3. Lichtfusion
    Honeycomb Apr 8, 2015


    #3
    BigRedBaron likes this.
  4. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    I did use the OPO during the charge to check some basketball scores (Houston Rockets, my home team. Go Rockets! Whoop their asses!! ;)) but it was minimal - no more that about 5 minutes screen on time during the charging period.
     

    #4
  5. scrivz69
    Jelly Bean Apr 8, 2015

    scrivz69 , Apr 8, 2015 :
    So it's pretty crap for a power bank then and not as advertised. Then again as said before these batteries need a few charges to get the full capacity so that could be the problem.
     

    #5
    bishs likes this.
  6. Lichtfusion
    Honeycomb Apr 8, 2015

    Lichtfusion , Apr 8, 2015 :
    Anyways, nice test, maybe you could also messure the mah with an App?
     

    #6
    bishs likes this.
  7. bombadier
    KitKat Apr 8, 2015


    #7
    bishs likes this.
  8. rsagdulla
    Gingerbread Apr 8, 2015

    rsagdulla , Apr 8, 2015 :
    10.000mAh in 3.7v convert in 5v, because it is the charging standart then you get yours 7000mAh in 5v...
     

    #8
    gusuraman likes this.
  9. Sebbe8910
    Honeycomb Apr 8, 2015

    Sebbe8910 , Apr 8, 2015 :
    Maybe u need to charge thw power bank a couple of times to get the full capacity
     

    #9
  10. rsagdulla
    Gingerbread Apr 8, 2015


    #10
  11. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    I've used a couple of other third party power banks and they are even crappier even though most of them cost more than the OnePlus PB. (Edit: spelling)
     

    #11
  12. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    Yup, check the post above. :)
     

    #12
  13. sp99
    Community Veteran Apr 8, 2015


    #13
  14. scrivz69
    Jelly Bean Apr 8, 2015

    scrivz69 , Apr 8, 2015 :
    Lol fair enough, seems most things do not live up to the specs given nowadays, especially when batteries are involved.
     

    #14
  15. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    hmmm... not very clear about the math there in your response. How does it actually work?
     

    #15
  16. Afzal Khan
    KitKat Apr 8, 2015

    Afzal Khan , Apr 8, 2015 :
    You really did a postmortem of OP Power bank..Good!! You shud tag the Admins here to ask the reason for the lower power bank capacity
     

    #16
    bishs likes this.
  17. rsagdulla
    Gingerbread Apr 8, 2015

    rsagdulla , Apr 8, 2015 :
    Sorry, missed that. Ampere only estimates the actual input, but OPO let in 1.2A when display is on and 2A when display is off... So Ampere did not show the "display off" result. But the charging time is bit long... It is strange...
     

    #17
  18. bose301s
    Ice Cream Sandwich Apr 8, 2015

    bose301s , Apr 8, 2015 :
    You're test results are completely and utterly invalid and useless. There's a lot of loss factors going from the 3.7v nominal batteries in the power bank to 5v for the USB output and back to 3.7v nominal for the OPO battery, plus the phone will also consume power from the power bank and internal battery of it's on. Again, completely invalid results.
     

    #18
  19. bishs
    Gingerbread Apr 8, 2015

    bishs , Apr 8, 2015 :
    How do I do that?
     

    #19
  20. firefly5
    Ice Cream Sandwich Apr 8, 2015

    firefly5 , Apr 8, 2015 :
    Thanks for the preliminary numbers. To properly test capacity, you need to measure with something externally inline with the circuit. Running something on the phone definitely is not that.

    Something like this from De-al Ex-treme may not be the most accurate but will give you good relative numbers for differing charges and discharges:

    http://www.**.com/p/lcd-display-usb...t-voltage-tester-capacity-tester-white-315314
     

    #20