WIRE HARNESS, PARALLEL BATTERY CONNECTION (iD COMPATIBLE)Only Traxxas Y-harnesses let you run dual-battery power for increased speed orruntime with the proven convenience and performance of genuineTraxxas High-Current Connectors. Choose the parallel harness to combinebattery capacity for extra-long run time. Dual-battery operation requiresattention to precautions outlined in the modelæs owners manual. Follow all precautions to assure peak performance and reliabilityof your model and batteries. Traxxas parallel and series Y-harnesses are for use with 2/3A battery packs on