Working Power supply voltage range for PX2

Dear Sir/mdm,

I understand the nominal working supply is abut 12V.

May I know what the minimum and maximum working supply voltage?

PX2 power design follow ISO16750-2 standard, directly to vehicle battery is fine, fuse suggested.
6~16V will have entire system on and fully functional.
PX2 can withstand with -14V for 60s as reverse and 24V for 60s as OV protection.

Has anyone experienced whether it is possible to supply a Drive PX 2 via a 4S lipo(charging end voltage 16.8 V)?