Samlex America

Commercial-Grade Mobile Power for the Working Van

The modern work van is a mobile workshop — and a mobile workshop needs AC power. Cordless tool technology has come a long way, but there are still plenty of applications where a corded tool, a battery charger bank, a laptop, or a piece of diagnostic equipment needs to draw from a real outlet. A quality inverter bridges that gap, converting your van's 12V DC battery power into the 120V AC power your equipment runs on.

Samlex America has been building inverters for commercial and industrial applications since 1991, with a catalog of over 200 power conversion products. The Samlex lineup used in work van and truck upfits — the PST, NTX, and SAM Series — is specifically engineered for the demands of continuous, mobile commercial use: wide operating temperature ranges, temperature-controlled cooling fans, high surge handling for motor-start loads, and construction that holds up to years of daily vibration and jobsite exposure. This is not consumer-grade equipment.

Pure Sine Wave vs. Modified Sine Wave: Which Inverter Do You Need?

Before choosing a Samlex inverter, the most important decision is inverter type. Getting this wrong means either overpaying for capability you don't need, or damaging equipment that requires clean power.

A pure sine wave inverter produces AC power that is virtually identical to utility grid power — smooth, clean, and stable. This is what sensitive electronics require. Use a pure sine wave inverter if you're powering any of the following:

• Variable speed power tools (brushless drills, saws, grinders)
• Battery chargers for lithium-ion tool batteries
• Laptop computers or diagnostic tablets
• Electronic test and measurement equipment
• LED lighting systems with electronic drivers
• Any device with a microprocessor or sensitive circuitry

A modified sine wave inverter produces a stepped approximation of AC power that works fine for many loads but can cause problems with sensitive electronics, variable speed motors, and lithium battery chargers. Modified sine wave inverters are a lower-cost option suited for:

• Basic corded power tools with standard motors (drills, circular saws — older models)
• Incandescent and simple fluorescent lighting
• Phone and device chargers (basic, non-switching)
• Simple resistive loads (heat guns, soldering irons)

Our recommendation for most van upfits: if you're investing in a properly installed, hard-wired inverter for a work van, the incremental cost of a pure sine wave unit is almost always worth it. Modern cordless tool chargers, diagnostic equipment, and laptops are almost universally sensitive enough to benefit from clean sine wave power — and a modified sine wave inverter can shorten battery charger life or cause erratic behavior in variable-speed tools. If budget is the constraint, modified sine wave works for basic applications — but pure sine is the professional choice.

Samlex Power Inverters: 250W to 3,000W

Samlex inverters in the 250–3,000 watt range cover the full spectrum of work van power requirements. Here's how to think about wattage for your application:

• 250W–600W — powering a laptop, phone chargers, LED lighting, and small electronics. The 250W and 450W SAM Series models plug directly into the van's 12V lighter socket — no hardwiring required. Good entry point for light-duty power needs.
• 600W–1,500W — the range for most single-tool applications: a corded drill, jigsaw, small compressor, or battery charger running one pack at a time. Most vans can support this range comfortably with a properly sized installation.
• 1,500W–2,000W — the sweet spot for contractors who need to run a corded tool and charge batteries simultaneously, or operate a larger compressor. The Samlex PST Series 1500W and 2000W pure sine wave inverters are the most popular choice in this range for commercial van upfits — proven in continuous commercial use, with high surge handling for compressor and motor-start loads.
• 2,000W–3,000W — for high-demand applications: running multiple tools simultaneously, powering a larger air compressor, or supporting a van setup that functions as a full mobile workshop. The NTX Series 3000W uses a 30A NEMA L5-30R locking outlet with built-in GFCI for full power utilization.

The Samlex PST Series is the flagship commercial line — heavy-duty construction, wide operating temperature range, hardwiring capability, and an ignition ON/OFF switch for clean operation tied to the vehicle's key. The NTX Series delivers the same dependable pure sine power in a more streamlined, cost-effective design with Samlex's Hypersurge™ technology for handling demanding startup loads. The SAM Series covers modified sine wave applications at a lower price point.

Samlex Power Inverter Installation Kits

Any Samlex inverter above 450 watts needs to be hard-wired directly to the vehicle's battery for safe, reliable operation — the lighter socket simply cannot handle the current draw. Samlex installation kits take the guesswork out of the wiring side: each kit includes correctly sized battery cables, an inline fuse, and the hardware needed for a clean, safe installation matched to a specific Samlex inverter model.

Using the correct installation kit matters. Undersized cables create resistance, heat, and voltage drop that reduces inverter performance and creates a fire risk. The Samlex kits are spec'd to the inverter — so if you're ordering a 1500W or 2000W inverter, add the corresponding installation kit to your order and the wiring side is sorted.

For fleet managers standardizing an inverter package across multiple vans, a complete inverter-plus-kit order ensures every vehicle gets an identical, correctly wired installation — no sourcing cables and fuses separately, no guessing at wire gauge.

Samlex America Inverter FAQs

What size inverter do I need for my work van?

It depends on what you're powering. As a practical guide: a 1,000–1,500 watt inverter covers most single-tool and battery charging applications. A 2,000 watt inverter is the right choice if you need to run a corded tool and charge batteries at the same time, or if you're powering a small air compressor. A 3,000 watt inverter is for high-demand setups — multiple tools simultaneously or a larger compressor. One important note: always size for the startup (surge) wattage of your tools and compressors, not just the running wattage — motor-start loads can draw 2–3x the running wattage at startup. Samlex PST and NTX Series inverters are rated for high surge capacity specifically because of this. If you need help sizing for your specific application, contact our team.

Do I need pure sine wave or modified sine wave for my van?

For most professional van upfits — especially those involving lithium tool battery chargers, variable-speed cordless tool chargers, laptops, or any diagnostic equipment — a pure sine wave inverter is the right choice. Modified sine wave inverters can shorten the lifespan of sensitive electronics and cause erratic behavior in variable-speed tools and modern battery chargers. If you're only powering basic resistive loads or simple older tools and cost is the primary constraint, modified sine wave works — but the majority of tradespeople running a properly equipped mobile workshop are better served by pure sine. When in doubt, go pure sine wave.

Does a van inverter need to be hard-wired to the battery?

For inverters above 450 watts, yes — hard-wiring directly to the vehicle battery is required. The van's lighter socket is typically fused at 15–20 amps and cannot safely power a 1,000W+ inverter under load. Hard-wiring with correctly sized cables and an inline fuse (included in the Samlex installation kits) gives the inverter the current it needs and keeps the installation safe. The 250W and 450W SAM Series models are the exception — those plug into the lighter socket and are appropriate for lower-power portable use.

Will running an inverter drain my van's battery?

Yes — an inverter draws from the vehicle battery whenever it's under load. For light use (charging a phone, running a laptop) while the engine is running, the alternator replenishes the draw and battery drain is not a concern. For heavier loads or extended use with the engine off, battery drain is real and you need to size your battery capacity accordingly. The Samlex PST Series includes an ignition ON/OFF switch connection so the inverter can be wired to shut off automatically when the ignition is off — an important feature for fleet vehicles where leaving an inverter active overnight could strand a driver with a dead battery. For high-demand mobile workshop applications, a dual-battery or auxiliary battery setup is the right solution and is worth discussing with your upfitter or our team before specifying inverter size.

What warranty does Samlex America offer?

Samlex America backs their inverters with a minimum 2-year warranty. Specific warranty terms vary by series — the PST Series and NTX Series commercial-grade units are covered under Samlex's standard commercial warranty. Confirm the warranty terms on the specific product listing or contact our team for details on the model you're considering.

How does Samlex compare to Xantrex for work van inverters?

Both are established, commercial-grade inverter brands used in work truck and van applications, and both offer reliable pure sine wave performance in the 250–3,000 watt range. The practical differences come down to positioning and price. Xantrex — owned by Schneider Electric — is generally positioned at a premium, particularly for their PROWatt and Freedom series, and is well-regarded in the RV and marine segments where integrated inverter-charger systems are common. Samlex is widely considered the stronger value at equivalent wattage in a commercial van context — the PST Series in particular has a long track record in fleet and commercial vehicle applications at a more accessible price point without sacrificing build quality. For a contractor or fleet manager whose primary use case is running tools and chargers in a work van, Samlex consistently delivers what's needed at a fair price. If you have a specific application where you're comparing models directly, our team is happy to help sort through the tradeoffs.