How to choose a power supply for two laptops?

Question

Power Supply

There are two laptops from different manufacturers with the following characteristics:
ASUS 19V 3.42A
msi 20V 2A
Both were well charged by charging from ASUS (connectors fit)
But the charger failed (gives out 17V AC). I don’t think that she failed due to the fact that she was charging another laptop (she is 5 years old).
So, the need has come to buy a new charge, I also think one for two.
What characteristics will be optimal?

Answer 1

First of all, the defect does not look fatal, you can try to repair it (I already wrote about this in a comment to the question).
And as for the choice - yes, any within 17 ... 21 volts (this is within the allowable +/- 10%), and in terms of current - the more the better.
The greatest difficulty is not in current or voltage, but in the plug. There are a lot of options, and either you have to solder the plug from the previous one, or (which is more correct) do not cut the cord and wind the electrical tape, but re-solder the entire cord: open the case of the new PSU, unsolder the regular one and solder the one that came up to the laptop before.