This is the Spektrum 850mAh 3S 11.1V 30c Smart G2 LiPo Battery with IC2 Connector

Overview
Spektrum 3S 850mAh LiPo Smart battery.

Features
Spektrum Smart Technology
Suitable for air applications
Comes with IC2 connector
Included items

Description
Spektrum 850mAh 3S 11.1V 30c Smart G2 LiPo Battery with IC2 Connector 1

Required items (not included)
Spektrum G2 Smart Charger or earlier Smart Charger with G2 update.
Spektrum IC2 - IC3 adaptor (#SPMXCA320).

Note
Spektrum IC2 connectors and charge leads ARE NOT compatible with EC2 connectors.