On a M2 Pro MacBook Pro, does the 96W charger "drain" the battery health faster than a 67W charger?
I'm sorry if this question has been asked multiple times before, I couldn't find a definitive answer online.
In theory yes, because battery health tends to degrade when charging produces heat. But given the size and volume of the Macbook chassis, excess heat while charging shouldn't be a problem.
Just in case anyone takes this as applicable to all situations....in general any device will only draw as much current as it wants. You can't force electricity into it faster by using a higher wattage charger. Charging with a higher wattage charger will not cause it to take any more current than its nominal charger.
The M2 MBA and the 14" M1 and M2 MBP are unusual in that they are designed to work with two different wattage chargers (30 and 67 for the MBA, 67 and 96 for the MBP) so they will charge at a faster rate with the higher wattage charger.
So yes the OP's 14" MBP the 96W charger will in theory lose battery health more than the 67W.
Actually, that's a false analogy. Apple's chargers can adjust the wattage being delivered to the computer as needed. In situations where optimized charging is enabled, this is done automatically. So regardless of whether the adapter is capable of putting out 60 or 96W, it might only be providing 25-30W to the laptop, if not dropping all the way down to a maintenance charge (which keeps the battery at current level, usually ~80%).