1000s of products

Service + Calibration

Technical Support

Cobra By Stealth Battery Arc Welder

Name: Cobra By Stealth Battery Arc Welder
Brand: SWP Ltd
SKU: 9027H
Price: 1653.00 GBP
Availability: InStock

£1,653.00

Shipping calculated at checkout.

COBRA BY STEALTH BATTERY ARC WELDER is a portable professional welding machine for workshop repairs and on-site fabrication where mains power access is limited.

Key Features

Battery-powered portable welding system
Suitable for professional workshop use
Hot-start and anti-stick functions
Compact design for mobile repairs
Supplied with charger and leads
Supports MMA and TIG welding

Everything we sell is supported by our factory trained engineers at our premesis in Manchester or nationwide through our mobile service engineers.

Returns details can be edited in the theme editor.

Service

In-house engineers

Support

0161 223 1843

Expert Advice

Jason says

The Cobra by Stealth battery arc welder is a portable MMA unit for repair work where a mains supply is unavailable or inconvenient. I see it being useful for site repairs, fabrication work and bodyshop tasks requiring occasional stick welding away from the main welding bay.

In practice, the lithium battery provides useful mobility, but the job still needs to be planned around charge level and duty cycle. Electrode choice and material preparation remain important, particularly when welding heavier sections or working on contaminated steel. The variable current control allows the operator to match the setting to the rod and material rather than relying on maximum output.

A common issue with battery welders is treating them like a continuous-duty mains machine. Repeated high-current welding will reduce available run time and may require cooling or recharging before the job is complete. I recommend checking the battery display before starting and keeping the charger available where possible.

Used within its duty cycle, it is a practical and reliable option for controlled welding in areas without dependable power.

Jason, Sales Director

WHY BUY YOUR EQUIPMENT FROM US?

At BWS, we do more than supply equipment. Our experienced engineers work with the products we sell every day, providing practical advice to help you choose the right equipment for your workshop.

From installation and training to servicing, calibration and repairs, we’re here to support you long after your purchase. You’re not simply buying a machine — you’re gaining access to a team that understands how to keep it working.

See What We Do!

Technical Features

Cordless lithiumion battery operation allows arc welding where mains power is unavailable
Variable welding current control supports MMA output from 10–180 A
LiftTIG mode provides an alternative process with a 10–150 A welding range
Hot Start assists reliable electrode ignition, particularly when starting on cold material
Arc Force helps maintain a stable arc during MMA welding
AntiSticking reduces the likelihood of electrodes remaining stuck to the workpiece
LED display provides clear operating and battery information
Batterylevel indication helps monitor remaining charge during work
Temperature, voltage and current sensors monitor operating conditions
Builtin overvoltage and undervoltage protection safeguards the welding electronics
Battery protection helps prevent overheating during use and charging
Highcapacity 740 Wh lithiumion battery provides extended cordless operation
Superfast charger reaches approximately 80% charge in around 60 minutes
Supplied with earth cable, electrode holder and charger for immediate welding
Compact, lightweight design is practical for moving between repair bays and remote jobs
Suitable for workshop, bodyshop, site and offgrid repair work
Aircooled operation supports practical use without a separate cooling system
Corrosionresistant protection against moisture, salt spray and corrosion supports demanding workshop and site conditions
Backed by a 5year warranty with UK sales, setup, servicing and technical support from BWS engineers

Specification

Battery Type

Lithium-ion

Battery Capacity

740 Wh ±5%

AC Charging Voltage

230V ±10%

Charging Time

100 minutes

Supercharging Time

80% in approximately 60 minutes

Battery Rated Voltage

74V

Charging Current

8A

No-Load Voltage

MMA 83.5V; TIG 83.0V

MMA Welding Current Range

10–180A

TIG Welding Current Range

10–150A

MMA Duty Cycle

10% at 180A; 20% at 130A; 100% at 60A

Cycle Life

100 charges

Protection Class

IP21S

Cooling

AF

Weight

11.5kg

Dimensions

440 x 150 x 280mm

Standards

EN 60974-1:2021 (LV); EN 60974-10:2021 (EMC); 2019

FAQs

Can the Cobra by Stealth Arc 180 be used away from mains power?

Yes. Its 740 Wh lithium-ion battery provides cordless MMA arc welding for workshop, mobile repair and site work where a mains supply is unavailable. The machine has a 10–180 A MMA welding range and includes the earth cable and electrode holder.

How quickly does the battery charge?

The supplied charger can bring the battery to approximately 80% in around 60 minutes. A full charge is listed at approximately 100 minutes, so allow for the longer figure when planning extended welding work.

What welding output and duty cycle does it provide?

For MMA welding, the Arc 180 provides 10–180 A, with a duty cycle of 10% at 180 A, 20% at 130 A and 100% at 60 A. It also supports TIG welding from 10–150 A, subject to the appropriate TIG setup.

What is supplied and how portable is the machine?

The kit includes the battery, super-fast charger, earth cable and electrode holder. At approximately 11.5 kg, with dimensions of 440 × 150 × 280 mm, it is practical to move between workshop areas or take to off-site repair work. Built-in over-voltage, under-voltage and overheat protection helps protect the machine during professional use.