I use the larger connector with the tamyia or deans for charging and discharging and the JST-XH connector for balancing/monitoring. The imax b6 does not come with a tamyia connector. you will have to make an adaptor or convert the batteries to deans connectors. One of the most common balancing connectors is the JST-XH. To my knowledge, all airsoft lipos use the JST-XH connector.
Here's some info on the balancing connector that may help