My Lenovo Thinkpad laptop came with a Type-C charger that has multiple output specs. The output specification of the Lenovo charger is:20V/3.25A, 15V/3A, 9V/2A, 5V/2A. Can I use this charger to charge my Macbook Pro 2019?
The output specification of the Apple Type-C charger that came with my Macbook is: 20.3V/3A, 15V/3A, 9V/3A and 5.2V/3A
01 Answer
It should be fine. Worst case scenario is it won't work.
I'm pretty convinced both chargers are USB-PD compliant because 20V, 15V, 9V and 5V are voltages USB-PD spec defines. The device will negotiate charging voltage with the adapter.
Voltage variations on Apple's charger are within 5%, that's perfectly fine. Higher current ratings (20V/3.25A vs 20V/3.0A) are okay. Lower ratings (5V/2A vs 5V/3A) aren't a problem, but the device would be charging slower at that voltage (but it's going to switch to 20V anyway, so it doesn't matter).
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