Can't charge laptop using powerbank

[holyfork]

Hi, I can't seem to charge my HP Omen Transcend 14" (14-fb1023d), using an Anker 737 Powerbank (PowerCore24k).

The Anker powerbank is supposedly capable of up to 140W (28V-5A) single port USB-C output using PD3.1 but when I plug it into the laptop, it appears to be resetting once every second and does not seem to provide any sort of meaningful charge to the laptop at all. I have tried both USB-C ports on the laptop and both exhibit the same behavior.

The powerbank is not broken as it can still charge other devices just fine. I have tried 3x different 240W supported USB-C cables, both USB-C ports on the Anker powerbank, and both USB-C ports on the laptop to no success.

Is there a cable/adapter/computer setting that would fix this issue?

[zoey7886]

@holyfork, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding Powerbank Charging Issues with HP Omen Transcend 14"! 

We're thrilled to have the opportunity to assist you and provide a solution.  

The Omen Transcend 14 is a bit particular when it comes to power delivery, and what you’re describing (the “heartbeat” reset every second) usually points to a mismatch between the laptop’s power requirements and what the powerbank is actually negotiating.

Here are a few steps you can try:

Check minimum wattage – The Omen Transcend 14 typically expects a steady 140W USB-C PD input. If the handshake drops below that even briefly, it’ll cut in and out. Try confirming in Anker’s app (if available) that PD3.1 is active and set for full output.

Test with the original charger – Plug in your HP adapter first, let the system boot and stabilize, then swap to the powerbank. Sometimes the laptop is more willing to accept third-party PD once it’s “awake.”

BIOS & drivers update – Head to HP Support Assistant or our drivers page and make sure your BIOS, chipset, and power management firmware are up to date. Older firmware can cause PD negotiation hiccups.

Try a direct, short cable – Even if yours are rated 240W, stick with a certified E-Marked 5A cable under 1m. The longer/heavier the cable, the more chance of power drop.  

Hope this helps! 

Take care, and have an amazing day!  

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Regards, 

[holyfork]

Hi Zoey,

Thanks for the suggestions.

The 3x different 240W USB-C cables (all 5A e-marked ones) I tired were of different manufacturers and lengths. So I don't think it's a cable issue. I don't have another device that can charge at 140w so can't really test the power bank either at that high of a power output. 

The bios of the laptop was also updated like a week ago and is the latest version available on HP's website.

The Anker 737 24k also does not support app connections so no way to check and see if the power output is fluctuating or not during the 1 second it is connected/negotiating the USB PD protocol.

I'll just chalk this one up to an unexpected incompatibility with the power bank.

That said, do you happen to know of a battery power bank that can be taken on airplane flights and has been tested/confirmed to work with the HP Omen Transcend 14" at 140w power delivery?