HP's USB-c charger lock crisis explained

Discussion in 'Hewlett Packard' started by alisaad619, Apr 9, 2016.

  1. trdood

    trdood Pen Pal - Newbie

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    I'm not sure I made myself clear by reading your response. I did not want to start a new thread as it seemed to be related at a glance with the topic - cannot use anything else to power / charge the tabletbook except the onboard charger. I tried a variety of devices, including fast chargers for cars, 4 types of external batteries and no result. So the simple question is: is there something preventing this from happening? they all work, they all charge other devices except for the Pavilion. Mainly I'm interested why external batteries don't simply work with it, as on a 12h flight, the normal onboard battery is insufficient, for example.
     
  2. FZelle

    FZelle Scribbler - Standard Member Senior Member

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  3. SSM

    SSM Pen Pal - Newbie

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    I have a HP Elitebook 1030 G2. Looking at a Type-C port, i got the RAVPOWER 26800 PD power bank, and tried charging the laptop, however, it refuses to charge. If I connect it, the Laptop says "Smart AC adapter power output is too low for this computer". Anybody tried this combination? Whats going wrong?
     
  4. Steve S

    Steve S Pen Pro - Senior Member Super Moderator

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    @SSM : Check your AC adapter. It will likely show that it outputs somewhere between 12V or 19V at about 3.5 A (purely guesswork on my part); this amounts to somewhere between 40W and 65W. Your RAVPower battery is only good for 30W of output power. That's why you're getting the error message...
     
  5. SSM

    SSM Pen Pal - Newbie

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    Hi, Today I tried the USB-A to USB-C cable to charge the laptop (essentially 5V@2A) - here I get a message "The attached power source cannot fully power the system. It can only supplement power systems. For full performance use a high..." - If 5V@2A can supplement, why can't USB-C to USB-C @30W supplement the power system of laptop?
     
  6. Steve S

    Steve S Pen Pro - Senior Member Super Moderator

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    <<...If 5V@2A can supplement, why can't...>>

    ...Your laptop's BIOS* is obviously designed to recognize this typical USB power profile. Since many users don't possess the same level of technical knowledge that you do, it's inevitable that some people will try to plug in a USB external battery with the expectation that it will somehow charge the laptop. The message is tailored for this specific scenario.

    However, a 30W input is sufficiently robust that it could be a failing AC adapter, an external battery, or perhaps something else. Thus the error message is more vague because of the expanded number of possibilities. Whether the 30W "supplements" your power system or not, I cannot say. It depends upon how your BIOS was designed...

    * In this discussion, I am using "BIOS" in the generic sense; the code that controls basic input / output function and control.
     
  7. SSM

    SSM Pen Pal - Newbie

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    But this isn't so smart then.. Is it? Since USB-C is intelligent - it should be able to read that a genuine source is connected and augment the power requirement. At least when it is shutdown, it should charge from this 30W battery source.
     
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