This DIY cable is for powering Mark 3 AC or charging Mark 3 battery directly from your own 48V power source. When run Mark 3 AC directly with this cable from power source, make sure the power source can output over 600W power. Specifications: Connectors: D20 for Mark 3 AC or Mark 3 battery, and eye terminals for positive and negative electrode of lithium battery. DIY Cable-1M DIY Cable-3M Cable Length 1M 3M Wire Size 16AWG 14AWG Rated Current 10A 15A Note: Accessories do not support the 30-day return policy.