Mini spot welder with output power is suitable for welding 0.1-0.15mm plated steel sheet and 0.1mm pure sheet quickly. Portable and lightweight, space-saving , easy to carry outside.Easy to operate, one key turn on or off. 6 gears of output power adjustable, freely switching according to practical needs. Applicable to home use, DIY, maintenance, etc.2 mobile welding are made of 10AWG silicone wire and copper rod, and it comes with 2 protective sleeves. The welding allow long welding range and can meet various welding needs.5300mAh -capacity lithium rechargeable battery, low power consumption, long usage time when full . And it can also be used as power bank to charge your phone conveniently.Made of high quality ABS and PCB, features great durability and stable performance, has long service life. Advanced power management and software , non-reset and non-zero during welding.NoteAfter arrival can not be used, may be the power is too low, resulting in the spot welder does not work, the charging light does not , and does not turn on, (at this time charging 1-2 hours, the voltage rises can be restored) after a full charge, only then will show Oh, use 5v 1A charger.If it is fully , it will 1. If you have a multimeter, you can measure the voltage at the OUT+ OUT- port Here is the remaining battery power2. Full charge is about 4.15V 3.3V is low voltageThe main parameters:Battery:3.7V/5300mAh:6 gears adjustableTrigger delay time:0.6 secondsCharger:5V1A,the current should not be less than 1AMaterial: abscolour: blackPackage Contents:1 x Spot welder with 2 welding 2 x Welding pen sleeve1 x strip1 x USB data cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.