The microcomputer control, the supply voltage automatic tracking compensates, may realize the single pulse, the double pulse and the multi-pulses welding, each parameter as numerical code establishment, thus parameter adjustment direct-viewing accurate, the straight line bearing design uarantees the welding the precision and the duplication, the rack uses the aluminum molding, the disassemblage is convenient, the many kinds of driving mechanism selects and matches, operation even more personalization. The parameter LED numerical code demonstr ated that, the control is more precise; The double stylus force inde-pendent may move, the welding is more reliable; Is suitable in the battery continu ally contact tag welding, the hardware one side welding.