Yes I use them all the time and have never had a problem. The video of the Extra 300 Special being flown by Bill Hrempel http://www.wildharerc.com/Downloads/extra300-004.wmv was flown using 2 1500mah Lipos and the MPI regulators. I have also used them on larger 33% and 35% planes without an issue. As I said before they have a 10A sustained output rating.

Wanna draw a lot of current? Hook up any old brushed electric motor, like a speed 400 or similar.

Tf