Subject: Minimum Wattage Power Bank for HP ZBook with USB-C PD

[venom_123]

What you were doing & experienced:
I’m planning to charge my HP ZBook using a USB-C power bank. The USB-C port on the laptop has the Power Delivery (PD) logo, and I want to know the minimum wattage a power bank should provide to either charge the laptop or at least keep it running without draining the battery.

Steps to recreate:

1. Connect USB-C power bank to the ZBook’s PD-compatible USB-C port.

2. Attempt to charge or power the laptop.

3. Monitor if the laptop charges, holds charge, or continues to drain.

Any error messages & details:
No error messages yet — just trying to find out what wattage power bank is required before purchasing one.

Recent software or driver changes:
No recent software or driver changes.

Your internet connection:
Using wireless connection.

[banhien · Accepted solution]

@venom_123 

Its specs

             https://www.hp.com/us-en/shop/pdp/hp-zbook-15-g5-mobile-workstation-p-4ra10ut-aba-1#techSpecs

It came with 150 W Slim Smart external AC power adapter. Its specs (above) does not say it supports charging from USB-C . If you wish, you need a power bank with wattage rating around 150W.

Regards.