No Wires T-Plug (Deans Style) Parallel Battery Connector. 
Choice from:
2 male to 1 female
1 female to 2 male

Product Description

Specification:
For increasing the using time of your device , you could simply use this adapter to connect 2 batteries to your device without extra cable.
Used For:
Wire 2 Batteries in Parallel / Double Capacity
Compatible:
Use For Wire 2 Batteries in Parallel / Double Capacity

Package Includes:
1 x Dean T-Plug Harness T Plug Series ( Connector type as selected)