Wall Charger For Clip Zip

My cell phone charger (which lists both 100V and 240V input voltage - I am in the US, so 110V applies)  says the following

Output: 4.5 V - 9.5V

800mA

(It is an aftermarket (non-OEM) wall charger I bought to use with my EVO 4G LTE)

I know the output amperage 800 mA is fine (over the minimum 350 mA listed).

My question is about the output voltage :

Given that the charger label says “4.5V - 9.5V”: Am I fine for use with my Clip Zip in USA (which has 110V voltage) since the reply noted “5V no more”?

(i.e. I don’t know if the 4.5 is for 100V and the 9.5V is for 220V countries?)

I just want to get confirmation that this charger is not more than the 5V max output voltage noted in this thread…

Is there a minimum output voltage for the Clip Zip?

I.e. is 4.5V okay?

Is less than 4.5V okay (in case I decide to buy another charger)?

Thanks!