1.Electrode Force is easily adjustable. 2.Powerful DC power supply produces welds in short time, practically no sparks and no discoloration. 3.Heat impact from welding is so small that it does not change any characteristics of the battery being welded. 4.Weld spot has the same color as the welded material. 5.All welding parameters are controlled from a keypad on the front of the machine. 6.Controller LCD panel displays welding parameters making process control accurate and convenient.