Bike headlight help

Hi all
I’ve got a headlight I made but have managed to kill the LED’s by connecting the wrong battery :person_facepalming:
Could you recommend an LED/optic that could give a good output and tight beam using the following:
Driver: TaskLED HBFlex
Battery: 7.4v3.6aH Li-Ion

I was running a quad XPL-Hi in a modified Magicshine housing but fancy using a single LED to try and improve the beam. As I’ve got the battery & driver I’d like to be able to reuse them. Open to the idea of making a new housing if needed as I have access to 5-axis CNC machines :slight_smile:

Any ideas greatly appreciated.

Thanks
Steve