Lifepo4 6.6 volt charge settings help

[xstatic]

I just purchased a turnigy nano-tech 2100 mah 20c discharge lifepo4 battery for my futaba transmitter. it says 6.6 volts so i am assuming 2 cell. I have a hitec charger and I want to know what settings are needed to program it? Amp rate etc

Any help would be appreciated