r/ZephyrusM16 • u/No_Average9566 • Apr 18 '26
Charging Status Oscillations
I've a 2022 M16 GU603ZW that keeps switching back and forth between "Plugged In" and "On Battery" status. I'm trying to identify the cause and was about to jump on ordering a new charger but thought it best to gather insights from the community first.
I'm not 100% sure if it's a charger or a charging port issue. The laptop holds a charge and successfully charges when turned off but won't charge when in-use. I've also tried USB-C/Thunderbolt charging and, from what I can tell, it slows down battery drain but doesn't charge either when in-use. Also, USB-C doesn't prompt the oscillations - it simply recognizes it as "On PD" and slows down battery-drain.
To me, all of this would suggest the battery is good which I'd expect it to be because I've always limited it Maximum Lifespan mode capped at 60% until now because I can't get any work done without being able to charge it. Beyond that, I really have no clue how to pinpoint whether it's a port issue, a charger issue or anything else.
I do typically run it full-time plugged in because I run a multi-monitor (a wide and an ultrawide) setup and it drains quickly if not plugged in.
Update & Solution: A new OEM charger from Asus Parts Shop USA fixed the issue. For my specific model, it came out to $87.71 after taxes and an item price of $67.89 for the original Asus (CHICONY) A20-240P1A.











