LiiOn Battery-Powered Hand Tool (48VDC)

The BAK LiiOn is a professional-grade, Swiss-engineered battery-powered hand tool built for thermoplastic welding in locations where corded tools simply cannot go. Whether you are working on a commercial rooftop without a nearby power source, running a repair in a mechanical room with no accessible outlet, or handling a tarp weld in the field, the LiiOn cuts the cord without cutting performance. Available from Hot Air Tools® at a competitive price, the LiiOn ships complete with a lithium-ion battery pack, a battery charger, and a purpose-built backpack designed to carry the entire kit safely to and from the job site.

What makes the BAK LiiOn stand out among battery-powered hand tools is not just its portability, but how much welding capability it delivers without a power outlet. It runs up to 45 minutes on a full charge at the highest temperature setting, covers a full stepless temperature range from 20 degrees C to 650 degrees C, and includes smart battery communication that alerts the operator before the charge runs out. The tool also features 360-degree rotation, a brushless motor, and a constant cooling airflow after the heat element switches off. For plastic welders who need the freedom to work anywhere without sacrificing tool performance, the BAK LiiOn is built for exactly that job.

LiiOn Battery-Powered Hand Tool Technical Specifications

The BAK LiiOn operates on a 60V lithium-ion battery system and draws 1,200W of power, delivering a full stepless temperature range from 20 degrees C to 650 degrees C and airflow up to 150 l/min. The complete kit, including tool, battery, charger, and backpack, weighs 7.5 kg total, with the hand tool itself coming in at 1.5 kg. Battery runtime reaches up to 45 minutes at the highest temperature setting, with an audible alert that signals the operator before the charge is depleted. The charging station accepts both 120V and 230V input, so the battery can be recharged from any standard power supply. The LiiOn carries CE certification and is ready to weld TPO, PVC, and a broad range of thermoplastic materials right out of the backpack.

• Voltage: 60V (48DVC Battery System)
• Power Consumption: 1,200W
• Temperature Range: 20°C – 650°C (stepless adjustment)
• Air Flow: 150 l/min
• Battery Runtime: Up to 45min at highest temperature
• Charger Input: 120V or 230V
• Total Kit Weight: 7.5 kg (with cable)
• Certification: CE

Key Features of the LiiOn Battery-Powered Hand Tool

Every feature of the BAK LiiOn is built around one core requirement: a professional-grade welding tool that does not need a power outlet to do its job. From the smart battery communication system to the 360-degree rotation and constant post-weld cooling airflow, the LiiOn eliminates the constraints that corded tools place on where and how quickly a welder can work. Key features include:

Cordless Portability

No extension cords. No generator. No hunting for the nearest outlet on a commercial rooftop or remote job site. The BAK LiiOn runs entirely on its lithium-ion battery pack, which means a welder can carry the complete kit up a ladder and start working immediately upon arrival. The included backpack is OSHA-compliant for ladder climbing, supporting three points of contact, and features a clear top viewing window so the operator can check battery level, temperature display, and tool status without unzipping or setting the bag down.

That backpack detail matters on a working job site. Stopping to dig through a bag or locate a charger mid-task costs time and breaks workflow. The LiiOn's carry system is designed to keep the operator moving: battery, charger, tool, and accessories all stored in one organized kit that is purpose-built for how roofers and fabricators actually work. Hot Air Tools® stocks the LiiOn as a complete kit so you get everything you need in one order, ready to go.

Brushless Motor Rated for Repeated Professional Use

The LiiOn's brushless motor handles the heat and repetition of professional welding work without the maintenance demands that come with older brush-motor designs. In a battery-powered tool, this matters even more than in a corded one: a motor failure in the field means a welder without power and without a simple fallback. The brushless design reduces internal friction, generates less waste heat, and extends the operational life of the tool across high-cycle use.

The battery pack itself is rated for approximately 3,000 charge cycles before any noticeable decline in capacity, which means years of regular professional use before the power system needs attention. When the tool or battery does eventually need service, Hot Air Tools®'s in-house repair team handles BAK tools directly. That means a qualified technician, a faster turnaround, and no international shipping wait while your kit sits in transit.

45-Minute Runtime with Smart Low-Battery Alert

At the highest temperature setting, the BAK LiiOn delivers up to 45 minutes of continuous welding time on a single charge. For rooftop repairs, detail work, and smaller fabrication runs, that runtime covers the job without interruption. When the battery reaches 5 percent charge remaining, the tool automatically cuts heat output to allow the welder and the tool to finish the current pass safely before cooling down, rather than shutting off without warning mid-weld.

The two-way communication between the tool and the battery pack runs throughout the weld session, updating battery status in real time so the operator is never caught off guard. Recharging takes approximately two hours from depleted, and the charging station accepts both 120V and 230V input, so there is no need to carry a voltage converter or locate a specific outlet type. For a welder running back-to-back jobs, a charged spare battery kept in the backpack means the kit is ready to go again without a break in the schedule.

Advanced Temperature Control

Despite running on battery power, the LiiOn does not trade away temperature capability for portability. The stepless temperature range from 20 degrees C to 650 degrees C covers the full spectrum of thermoplastic materials a professional welder encounters: TPO and PVC roofing membranes, thermoplastic flooring seams, HDPE and PP fabrication sheet, and heavy-duty tarp material.

Each material type has a specific optimal heat window, and the stepless control means the operator dials in exactly what the job requires rather than choosing between fixed presets. Airflow at up to 150 l/min supports efficient heat distribution across the weld zone at all temperature settings. For the quick repairs and finishing work the LiiOn is particularly suited for, consistent airflow at the right temperature produces clean seams without overworking the material. The 360-degree rotation on the tool also allows the operator to adjust weld angle without repositioning the arm, keeping the heat application steady through the full pass.

Constant Cooling Airflow and Safe-Shutdown Design

When the operator finishes a weld and switches off the heat element, the LiiOn continues moving air through the tool automatically. This constant post-weld cooling airflow protects the internal components, the heating element, and the battery connection from residual heat buildup, which is a primary cause of shortened tool life in tools that cut power entirely at shutdown. The LiiOn's cooling cycle runs until internal temperatures drop to a safe level before the tool fully powers down.

The tool also uses dedicated connectors that prevent any other battery or accessory from being plugged into the LiiOn's power system. That design detail protects the battery pack from incorrect charging loads and ensures the two-way communication system between the tool and battery functions as intended. On a job site where multiple tools and chargers are in use, that protection is not a minor consideration.

LiiOn Battery-Powered Hand Tool Applications

The BAK LiiOn's combination of full-range temperature control, reliable battery runtime, and complete job-site portability makes it a practical tool across a wider range of professional plastic welding applications than most battery-powered hand tools can claim. For any job where getting power to the weld location is the first obstacle, the LiiOn removes that obstacle entirely. Common applications include:

Roofing

On commercial roofing projects, the LiiOn's most immediate advantage is the elimination of power cord management on the roof. No generator, no gasoline, no extension cords running up the side of the building or across the membrane surface. The welder carries the complete kit in the backpack, climbs with three points of contact per OSHA requirements, and starts working on TPO or PVC membrane seams without any additional setup.

The LiiOn is particularly well suited for rooftop repairs and detail welding where a full automatic welder is not practical and a corded hand tool would require running power to an inconvenient location. Flashing details, membrane patches, penetration seals, and parapet edge work all fall within the LiiOn's capability. It handles the jobs that would otherwise mean bringing a generator up to the roof or leaving the repair for a better-equipped return visit.

Flooring

Thermoplastic flooring installations and repairs frequently run into the same power access problem that roofing does: the outlet is on the other side of the room, the cord creates a trip hazard across a finished floor surface, or the work area is in a space where running cable is not practical. The LiiOn addresses all of those constraints with a self-contained kit that requires no outlet in the work area.

For floor-level work, the LiiOn's 1.5 kg hand tool weight keeps physical fatigue manageable across extended low-position welding. Seam repairs, detail edges, and transition seams between flooring sections are all within the tool's capability, and the stepless temperature control allows the operator to match heat output precisely to the flooring material in use, whether PVC, thermoplastic rubber, or linoleum.

Plastic Fabrication and Tarps

In fabrication and field repair applications, the LiiOn's value is straightforward: it brings professional-grade welding capability to locations where no power infrastructure exists. Field repairs on heavy-duty tarps, industrial covers, and reinforced sheeting are exactly the kind of job where a battery-powered tool with a 45-minute runtime and a full temperature range gets the work done without requiring the job to stop while someone locates an outlet or fires up a generator.

For fabrication shops running spot welds, patch work, and seam finishing alongside larger production equipment, the LiiOn also functions as a flexible secondary tool that does not compete for outlet space or add to the cord management on the shop floor. Across PP, HDPE, PVC, and other thermoplastic materials, the LiiOn delivers the heat control and airflow needed for clean, reliable bonds on a range of material types and thicknesses.

Why Buy the LiiOn Battery-Powered Hand Tool from Hot Air Tools®

At Hot Air Tools®, we have been working with professional plastic welders since 1986, and we know that the right tool for the job is not always the most obvious one. The BAK LiiOn is a purpose-specific tool, and we will tell you directly whether it fits your application before you buy it. If you are looking for a battery-powered hand tool to handle rooftop repairs, remote field work, or any thermoplastic welding job where power access is a constraint, the LiiOn is built for exactly that. If your project calls for something else, we will point you to the right option, even if it is not a tool we sell.

When you purchase the BAK LiiOn from Hot Air Tools®, you get the complete kit, including the battery, charger, and backpack, at a competitive price, backed by in-house repair support that keeps your tool in service rather than in a shipping box. Add the BAK LiiOn Battery-Powered Hand Tool to your cart today, or contact our team with any questions about your application, job site conditions, or which BAK tool is the right fit for what you are working on.