Exclude possibility of damage of Android device while chargin with another charger
Workmate is correct: all USB chargers supply 5 V with current limited by the design of the charger.  However, the device won't draw more current than it needs -- connect a 2 A capable device to a 500 mA charger, and it'll charge at 500 mA, but connect a 500 mA device to a 2 A charger, and it'll still only draw 500 mA.

Battery fires and explosions are caused by internal shorts and excessive current draw from the battery, not by charger mismatches (within USB voltage spec).