Manual Battery Pack Welding Machine The MD-MND5000 is a 6000A inverter spot welding machine built for high quality lithium battery pack assembly. It is suitable for 21700 and 18650 battery packs welding, such as Power tool, e-scooter and energy storage battery packs. The induction load voltage feedback mode keeps the welding voltage constant, so every spot is consistent and reliable. Key Features Constant voltage feedback control - induction load voltage feedback keeps