1. Operation without the main electricity

2. Extremely compact and portable

3. MMA welding for ARC 180

4. TIG welding with gas-valve torch for ARC 180

5. Battery indicator shows the state of charge of the battery

6. Built-in Hot start, arc force, and anti-stick

7. Variable amperage control with digital meter, for a simultaneous welding current display

8. Quick charge-Recharges battery to 80% within 35mins and fully charged in 60mins

9. Protection from overcharging, deep discharge, overheating, over-voltage and under-voltage

10. The power source can be used for welding while charging