Attention: It is required to use 2 batteries in same specification (e.g same voltage, same charge/discharge condition, same brand, same model etc) to avoid battery damaged.

The Different Application:
T plug parallel adapter is perfect for wiring two batteries with T-plug connectors together in parallel,increases capacity for doubles runtime.

T Plug serial series connector is designed to connect 2 batteries (Same mAh Capacity) with T-plug connectors in series，which will double the output voltage with same capacitance for fast charging or discharging.

Connection Type: T plug parallel &T plug serial series
Connectors: 1x female T Plug Connector to 2x male T Plug connections
Wire Length:10cm/3.94inch.
Wire Gauge: 12AWG Soft Silicon

Package includes:
1 x T plug Serial Series 12AWG Silicone Wire
1 x T plug Parallel Y-Harness 12AWG Silicone Wire