Weak charging state notification on Acer Nitro AN17-51-781V but battery appears to still be charging

slatus

Hi

When I plug in a self-powered Thunderbolt device, Windows pops up the "Weak charging state" notification. The battery appears to still be charging, but this notification shouldn't happen. The Thunderbolt devices I've tried are Blackmagic UltraStudio 4K and also an AJA IO 4K Plus. They both are self powered and produce the same power notification.

How do I stop this notification?

Thanks

Simon

[Edited the thread to add issue detail]

StevenGen

https://community.acer.com/en/discussion/695909/weak-charging-state-notification-on-acer-nitro-an17-51-781v-but-battery-appears-to-still-be-charging

For the OS to show that warning your devices must be using the AN17-51 laptops adaptor and power and that is why you are getting that warning for the "Weak charging state" notification,

I don't know which exact adaptor you have supplied oem from Acer with the model Nitro AN17-51-781V but there are two adaptors for this Nitro model laptop, one is a 230W and the higher end adaptor is the 330W adaptor that is supplied with the AN17-51-xxxx laptops. If you have a 230W adaptor, get a higher end 330W adaptor from the list below and see if that helps and solves that "Weak charging state" notification. Otherwise use a lower end Thunderbolt capture and playback device as the one that you are using is affecting this laptops power and charging being connected to this laptop.

slatus

Hi Steven
Thanks for that. I have the 330W charger, so all good there. I fear it's a BIOS/Design issue.
The system is getting confused that a Thunderbolt device with it's own power supply is also trying to charge the laptop, which it isn't. If the laptop has it's own PSU connected, then why would you also want to charge via Thunderbolt?

I've used these Thunderbolt devices on all sorts of laptops, just never an Acer made one, which is what makes me think it's a bit more of a BIOS/motherboard design issue.

Thanks

Caoe

Hi Guys, any news from this? I'm having the same issue, but with the monitor coneected to the thunderbolt/USB-C port.

I have a Helios Neo 16 (PHN16-71) RTX4060; I recently started using a Gigabyte G27Q monitor with USB-C output (displayport, Gsync 165hz - higher than the 144hz HDMI port without Gsync); The problem is that even with the original 330w charger connected to the notebook, it complains of a “weak charging state” and sometimes (randomly) does not allow it to switch to performance mode because it understands that it is not connected to the socket; I've noticed on forums that several people are having the same problem, but I haven't found a solution!

If I remove the monitor from the thunderbolt plug the warning disappears. I tried uninstalling the “AC Microsoft” driver in device manager successfully, but only temporarily. It is a software issue. I don't want to go back to HDMI and lose gsync and the higher 165hz... How can I make sure the notebook doesn't use the Thunderbolt power when the monitor is connected?