I have a PS Vita I wish to charge with my Samsung Galaxy charger, its output is 9.0V = 1.57A which is for fast charging (correct me if I'm wrong) and thus won't handshake with the Vita so won't supply this power (again, correct me if I'm wrong) or 5.0V = 2.0A The regular charger for the Fat PSVITA supplies 5V = 1000mA and the regular charger for the Slim PSVITA supplies 5V = 1500mA. I posted a question on Amazon asking if I could charge the PSVita with a Samsung Galaxy charger because as far as I know it would only supply the amperage the system asks for and someone replied saying this:
This is only partially accurate. The PSV has the capacity to play while charging which normally just makes the device charge more slowly. Using a higher capacity would mitagate this a bit, but for standard charging it would charge the battery to quickly causing overheating and decreased life span for the battery. It would also lead to battery expansion (ballooning).
He had me worried a little bit, but as far as I know and according to other sources online as long as the amperage of the charger is higher than the amperage the device needs and not lower it should be perfectly fine, but maybe he is still right and charging it with a Galaxy charger would make the battery expand, overheat and have a decreased lifespan?