The device is a mini spot welder that is use for connecting 18650 Li-Ion batteries to each other with nickel-plated steel strip by spot welding. The device has an automatic power-off function and switches off after 3 minutes of standby.
Usable for spot welding of 0.1 ... 0.2mm plates.

Seen from the contacts, you can switch the device on and off with the top right key. One push of a button to turn on, two push of a button to turn off.
The output power can be adjusted with the upper left button when viewed from the contacts. The number of LED indicator indicates the strength from 1 to 4.


Built-in battery: 5Ah
Output maximum voltage: 4.2V
Maximum output current: 500A
Charging: 5V with 2.1A USB charger (not included)
Maximum plate thickness: 0.1...0.2mm
Housing material: aluminum
Coating: anodized
Cable length: ~300mm
Dimensions: 150x80x22mm