A capacitor is not a battery. Capacitors are stored at zero voltage. Long term use requires no maintenance, no memory effect, and no over release problem. For example, even after 1 year of inactivity (well preserved), it can still be used normally! Super strong high current discharge ability, can be used as a practical tool for long-term use, with high cost-effectiveness! Farad capacitor spot welding machine is the top entry-level spot welding machine for capacitor discharge spot welding! Unmatched welding ability and excellent cost-effectiveness! Powerful power and welding ability, 0.3mm nickel plating, 0.2 pure nickel! Professional design of two low internal resistance, 3000 Farad supercapacitors Plug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on Voltage: AC100-240V color: Black Material: plastic+metal Four ultra current MOSFETs, with power far exceeding any portable spot welding machine on the market! 16 square meter thick pure copper welding pen with aluminum oxide copper spot welding spot welding Non stick Easy to weld 0.2 pure nickel, 0.3 nickel plated, 0.4 stainless steel (in millimeters) with bright and non blackening solder joints! Long press the switch for 2 seconds to switch between Chinese and English display Automatic welding can be adjusted in 0.5-7 seconds, and welding power can be adjusted in 1-119 gears The board comes with constant current and constant voltage charging and capacitance equalization function capacitors The voltage display is clear on one screen This spot welding machine is suitable for assembling cylindrical monomers, mobile phone soft pack batteries, electric vehicle batteries, and repairing electric tool batteries! Package Contents: 1 x Portable Spot Welder Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.