mostafa0071, It's not my business, but you already have a good charger. It is compatible with more than 200 models of Samsung cell phones. Most models do not charge from 9V. Only from 5V. The possibility of 9V does not destroy them. Look here
http://www.samsung.com/us/mobile/mob...sta-compatible
But if you are afraid of supporting fast charging in the charger, you can buy absolutely any charger for gadgets only for 5V and 500mA and above (750 mA, 1000mA etc). Do not buy Chinese noname charger. Bad chargers can carry a high frequency pulsating current and (or) unstable voltage