12-11-2018 12:32 AM
I love my P52, even if it throttles the CPU a little too easy.
What I don't love is that is won't receive any charge with a 90W adapter or USB-C unless it's hibernated or turned off (and not always then either).
Previous models would give a message that it's not sufficient and use some battery to compensate, but now I have to drag a huge 170W adapter to meeting rooms at work, which are prewired with 90W which should give me more than enough hours on 90W plus battery to last all day.
Is there a good reason to not support these ways to charge?
01-10-2019 06:29 AM
Hello sveintore! Welcome to Community Forums.
What is the wattage of the AC adapter that came with your machine? Based on the product specifications, the machine's AC adapter is 170W slim tip AC adapter and USB-C doesn't support power delivery. You may refer to the specs here https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad%20P52/ThinkPad_P52_Platform_Specification....
01-17-2019 02:06 AM
01-17-2019 08:50 AM
I have been using W and P series since W520 (maybe w510?) and they wouldn't start without a large adapter connected. You could plug a 90w is after it was running and I believe there would be no protection against overloading the adapter (fire or overheating possibility) or damage to the laptop's internal power circuitry. If you need additional run time, I suggest carrying an extra battery.
01-30-2019 12:51 AM