This is the one I started with - it seems to be same charger except for the name and the price -

http://www3.towerhobbies.com/cgi-bin...&I=LXCLD5&P=ML

If its the same, just be aware it likes to false peak charging at 3amps, so just check the batts and see how warm they are - they should peak at 120-130F. If they're not hot, just reset charger and start again. When my Piranha d=would do this, it would take 2 or 3 times to get batt fully charged.