Can I use a 5.0V = 1.55A charger to charge a 800mAH device?

[Android Central Question]

I got my J7 Prime charger that

Input: 100-240 V - 50-60 Hz 0.3 A
Output: 5.0 V = 1.55A

and i want to know that is it safe using it to charge a 800mAH PS4 charger?

 

[Rukbat]

The current drawn is determined by the device, not the charger, so sure it's "safe" as long as the charger is 5 Volts. You could use a 30 Amp, 5 Volt supply as a charger (which is what I do sometimes).