I decided to turn my portable into a lab style laser to get more power and less heat.I was using a host with the driver set to 1.25a from survival laser.I took it apart and mounted the heatsink to a large heatsink i have with a fan attac hed.To power it I'm using my Mastech HY1530EX variable power supply.At 4.6 volts and 2 amps what do you estimate the power level to be?It hardly gets warm after a few mins of run time,has a brighter beam,and has way more burning power than before.Now i just need to find a nice looking case to put it in.