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Chemical Plant Maintenance: Bringing Welding | Case Study
> Cases > Chemical Plant Maintenance: Bringing Welding Power to the Repair Point with the LW-370
Chemical Plant Maintenance: Bringing Welding Power to the Repair Point with the LW-370
2025-08
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LW-370 battery-powered welder at a chemical plant

Industry: Chemical Processing | Application: Plant Maintenance and Repair | Product: LW-370 | Process: Scratch-Start TIG Welding

At a chemical plant, maintenance personnel used the SOFIMO LW-370 battery-powered welder for scratch-start TIG welding during workshop repairs.

The application highlights a practical benefit of battery-powered welding: bringing the power source to the work area without needing to plug it into mains power. With its integrated battery and carrying handle, the LW-370 gives maintenance teams more flexibility in where they position their welding equipment.

Welding Power Without a Nearby Outlet

Having electricity in a facility does not always mean having a suitable outlet at the repair point. Equipment layouts, access routes, and cable routing can all affect how a welding task is set up.

The LW-370 combines a welding power source with a 2,741 Wh battery pack built with new Grade A automotive-grade cells. With enough charge for the task, it can supply welding power without a mains extension cable running to the machine.

For maintenance work where power access is inconvenient, this means less dependence on outlet locations and greater freedom to position the welder where it is needed.

Battery and Welder in One Portable Unit

Moving between repair locations is part of plant maintenance. The LW-370 keeps the battery and welding power source together in one housing, with no separate battery box to move.

Weighing 22 kg, the unit features an integrated carrying handle for transport and repositioning. Its self-contained power source gives crews a practical option for moving welding equipment around the workshop as tasks change.

TIG and Stick Capability for Maintenance Work

In this case, the LW-370 served as the power source for scratch-start TIG welding. The model supports contact-start TIG and offers a specified 10–150 A current adjustment range, allowing settings to be selected to suit the welding procedure and workpiece.

The LW-370 also supports 2.5–4.0 mm stick electrodes. With the appropriate accessories and setup, maintenance teams can use the same power source for TIG or stick welding, depending on the repair requirements.

That process flexibility makes the unit relevant to teams handling a variety of maintenance welding tasks.

Check Battery Status Before the Job

For battery-powered welding, preparation includes checking that the available charge matches the planned workload.

The LW-370 features an intelligent battery management system (BMS), with Bluetooth access to battery information on compatible Android and iOS devices. Users can check battery status before taking the unit to the work area and plan recharging around upcoming tasks.

Charging from a 220 V AC supply takes approximately 3–4 hours. Built-in undervoltage protection helps protect the battery against excessive discharge.

A Practical Option for On-Site Maintenance

This chemical plant application brings together the LW-370’s key strengths: welding without a mains connection, an integrated portable design, and TIG and stick capability.

For maintenance teams working across different repair locations, these features provide an alternative to equipment that must remain plugged in throughout the job.

Considering battery-powered welding for your maintenance team? Contact us to discuss your application, request LW-370 specifications, or get a quote.

The facility’s identity and location are withheld for confidentiality. Specifications refer to the corresponding product model. Actual runtime and charging time vary with operating conditions.

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