Safe to use Thunderbolt dock for Powering 16 inch M1 max instead of MagSafe?

[kofman13]

Is it safe to charge new 16 inch macbook pro M1 Max from a Thunderbolt dock with say, 96W charging when the magsafe charger that comes with the macbook is 140W? i am worried because i saw in a review on youtube that said if you use the M1 Max 16 inch with a Thunderbolt docked, you also should plug in the magsafe 140W charger at the same time.. because if you dont, then you will get battery drain while using it with lower than 140W and you will kill your battery. is this true?? it seems like a pain to keep both plugged in. i was hoping to have a one cable solution when going to my desk.
a couple of YouTubers said in videos. If it is not giving enough power to charge and run at same time, it hurts “battery health” and capacity over time. I’m worried about that. I guess it’s based on workload. Maybe I won’t have drain when I get it and do the setup. I’ll see

 

[adamjackson]

I don't own one yet but from what I've read, 140W is there to ensure the MacBook can function at peak performance and still have a bit of watts left over to charge the battery slightly and not dis-charge.

96 watts is more than enough if you're not totally hammering the machine for hours at a time. Even 30 minutes of rendering will discharge the battery at 96 watts but then when you're back to replying to emails or taking notes, it'll charge back up.

My plan though since I have MagSafe that is just hanging out is to use my MacBook with MagSafe charger always connected + a CalDigit TS3 connected to it for my peripherals.

 

[Bearxor]

I have a TS3 connected and it charges over TB @ 87w and I have the 16" M1Max MBP set to high performance. No problems with it.

I don't really do anything super heavy on it and the OS holds the charge at 80%. I use the 140w power adapter to charge a lot of things around the house and just keep the usbc-magsafe cable hanging around in case i need to charge the mbp off the dock.

 

[brosenz]

The new MacBook Pro 16 M1 Pro/Max comes with a USB-C 140W Charger who uses PD 3.1 for rapid charging at 28V/5A. If I use an old 87W Apple Charger who will charge at PD 20V/4.3A, instead of 28V/5A, meaning slow charge, would that benefit the battery life long term?