From the manufacturer:
Battery Charging
The 1000 mAh 7.4V lithium polymer battery pack
is equipped with a 3 pole balance charger lead that allows the battery to be
charged off standard RC battery pack chargers (not included). Follow your charger
instructions for setting up for 760 mA 7.4V Li-po. Some chargers require the
discharge cable to be connected. Use the enclosed discharge lead adapter for
these types of chargers.