BCD 402 Combiner Diode - 2 Batteries - 40A BCD402Diode Battery Combiners guarantee continuous DC power to mission-critical equipment, such as an electronic engine control system. With a Diode Battery Combiner, two or more DC power sources can be used in parallel to supply the mission-critical load. Failure of one source will not interrupt power to the critical load.The Argo Battery Combiners feature a low voltage drop thanks to the use of Schottky diodes: at low current, the voltage drop is approximately 0,3 V, and at the rated output approximately 0,45 V.Warning: hot surface, mount the Argo Diode Battery Combiner on a non-flammable surface only!Please contact your dealer for any returns, repairs or support issues related to this product. Quick Guide (pdf)