i'm using it...pretty good....it charged my IB 4200 to 4900mah....it supports Lipo charging and voltage monitor option too...huge screen but huge body too....in fact, the PCB is ok in size but the heat sink and air circulation make the shell to be as big as it is. the wire comes with it is thick and high quality....simple/informative/beautiful interface...it's as easy to use as MM charger...or i would say even easier than all other chargers.... highly recommended....the buttons are better than MM charger...it has motor break in function....10 memory model...graph enable screen...