BougeRV 20ft 10AWG Solar Extension Cable with Connectors (Red/Black) vs BougeRV Solar Y Connector, 1 to 2 Parallel for Panels (FMM+MFF) 5 Pairs

Key Differences

A (B0891XRFQB) is a waterproof, TUV-certified 2-in-1 solar Y-branch connector with a built-in lock and is optimized for paralleling panels using 14AWG–10AWG. B (B075424L8R) is a heavy-duty 20 ft 10AWG extension cable with tin-coated pure copper conductors and includes a free pair of connectors (though some buyers reported missing connectors and mixed wire stiffness). Choose A if you need a durable, certified Y-connector for paralleling panels; choose B if you need long 10AWG extension cable length and thicker conductors