This battery charges up to about 7.4V or even 7.5V when fully charged and right off the charger. Voltage to the field (1/2hr drive) usually drops off to about 7.2V before the first flight.

I fly down to 6.1V and then call it a day.

http://www3.towerhobbies.com/cgi-bin...LXNHS4&P=0