05-05-2018 11:20 PM
So, to start with, my original power cable went bad on me. I'm 99% sure the issue in question was the power cable from the adapter to my laptop (it was acting normally when that was positioned in exactly the right position; otherwise, it wasn't charging or wasn't transmitting power). I went to Best Buy and picked up an Insignia (Best Buy house brand as far as I can tell) 90W AC Adapter. It seems to rate at 19V/4.74A.
Well, lo and behold my computer is "refusing" to charge while active. It seems to charge just fine when it is asleep or otherwise out-of-service but it won't charge when it is active (regardless of what power settings, etc. I'm using; yes, I tried to muck about).
Is this a bad unit? Is it a bad model of adapter? Or is this just Lenovo's software being a passive aggressive pain?
05-06-2018 03:32 AM
The ThinkPad P50 requires a minimum of 135 Watts to charge, so you'll need a higher-wattage charger. If your system is still under warranty, I'd suggest contacting Lenovo support to see what they can do about the original power adapter not working.