01-16-2020, 05:42 AM
W = V x A
Manufacturers will quote the highest wattage the charger can do, but it may not be capable of the same wattage at all voltages - as an example your Essential charger can do 27W at 9V but only 15W at 5V.
Given all your chargers do both 5v and 9V they're most likely all PD capable, so should work with the PinePhone. The Essential will charge at maximum speed, but the S9 and P30 chargers will be slower.
Manufacturers will quote the highest wattage the charger can do, but it may not be capable of the same wattage at all voltages - as an example your Essential charger can do 27W at 9V but only 15W at 5V.
Given all your chargers do both 5v and 9V they're most likely all PD capable, so should work with the PinePhone. The Essential will charge at maximum speed, but the S9 and P30 chargers will be slower.