3 Types, T-Plug Series 3-Pack, T-Plug Parallel Battery Cable for Helicopter Quadcopter in RC Mode | T-Plug Serial Connector, T-Plug Parallel Connector, and T-Plug Battery Extension Cable with Gold Plated Plugs and Ultra Soft Series Silicone Cord. Can withstand continuous high current, exquisite workmanship, authentic, and inexpensive. | The t+plug+connector is easy to use, just connect the battery to the T-plug connector, this requires your battery to have the same specification. | Reminder: When using the female and male t-plug connectors, it is recommended to use 2 batteries of the same capacity and voltage, otherwise there will be internal friction between the batteries. | Package Contents 3 pcs, T-plug Parallel Connector 1 pc, T-plug Serial Connector 1 pc, Dean Expansion 1 pc