Original charger: Input: 100-240V , 50-60Hz , 1.6A Output: 19V , 3.42A
New Charger: Input: 100-240V , 50-60Hz , 1.5A Output: 19V, 3.42A
Original charger: Input: 100-240V , 50-60Hz , 1.6A Output: 19V , 3.42A
New Charger: Input: 100-240V , 50-60Hz , 1.5A Output: 19V, 3.42A
The new charger will work perfectly. The 1.5 vs 1.6 input discrepancy is probably just the efficiency of the charger. They both output the exact same voltage at the exact same amperage, so there is no possibility for damage.
There is risk to damage your laptop if the output V is different to the original one. The output A does not matter if it is bigger or the same value because the A is the maximum current provided by the charger, so if the laptop consumes less amps that can give the charger, nothing happens.
So in resume: