A 3v coin cell (I assume you mean) has nowhere near the capacity, and insufficient voltage to drive the LED, scratch that.
A USB li-ion pack of sufficient capacity could supply 5v at say 2A which could drive the LED, depending on expected run-time, but it's still problematic. LED still requires current regulation, but its forward voltage may be too close to 5v to do it with a resistor. Even electronic regulation needs some overhead.You might find a driver which does this, but easier to use one with higher input voltage, say 12v as suggested (if that's workable).
Possible specs for driver:
- input 12v (or whatever range you can use, but higher than 5v).
- output voltage includes LED's Vf 4.5v-5v range.
- driver constant current output 2A (for 10W), or lower depending on your needs; possibly
settable.
Dave
Yes that's it Trying to make it as small possible 3V button Cell maybe if it could work or hook it up to a USB power bank somehow