MD-MND5000 Manual Battery Pack Welding Machine The MD-MND5000 is a 5000A inverter spot welding machine built for high quality lithium battery pack assembly. It is suitable for 18650, 26650 and 21700 battery packs welding, such as E-bike, scooter and electro mobile 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