Can a battery power generator run a welding machine on the construction site?

Yes, provided the inverter can handle the high inrush/peak power. The GM 3600 delivers 3,600 W continuously, is load-capable at 200 % (7,200 W) and manages peaks up to 18,000 W (500 %) – with a pure sine wave for high-inrush, inductive loads such as inverter welding machines, angle grinders and rotary hammers.

Is the GM 3600 suitable for the emission-free construction site?

Yes. The GM 3600 operates completely emission-free and quietly – with no exhaust fumes and no noise. This makes it suitable for indoor spaces, night-time construction sites and low-emission zones where diesel generators are not permitted.

Can I charge my DeWalt or Milwaukee batteries with the GM 3600?

Yes. Via the 230 V Schuko outputs you run standard chargers and devices off-grid – including those from DeWalt, Milwaukee, Hilti or Stihl. This lets you charge your tool batteries directly on the construction site, without a mains connection and without a generator.

Instagrid Alternative for the Construction Site: GM 3600 – Battery Power Generator & Portable 230 V Power Station Compared

Q: What is the best Instagrid alternative for the construction site?

The GM 3600 is a direct alternative to the Instagrid ONE: 3,600 W continuous power, load-capable at 200 % overload (7,200 W) and 500 % peak (18,000 W), 2,134 Wh, pure sine, IP54 and approx. 115 min charging time – emission-free and quiet, from 2,999 € net instead of 3,690 €.

Looking for an Instagrid alternative for the construction site? The Instagrid ONE shaped off-grid 230 V site power – but as a single unit it is expensive. The GM 3600 offers the same league of performance (3,600 W continuous, 18,000 W peak) with more capacity, faster charging and IP54 protection – for 2,999 € instead of 3,690 € net. This article compares the two objectively against the real requirements on the construction site.

3,600 WContinuous power

200 %Overload capable (7,200 W)

~115 minCharging time

from 2,999 €net (instead of 3,690 €)

What must a mobile power supply on the construction site really deliver?

A professional mobile power supply for the construction site has to do more than an outdoor power bank. Three points are decisive:

Peak and inrush power: Heavy equipment with high inrush current – rotary hammer, angle grinder, inverter welding machine – briefly needs a multiple of the rated power. The GM 3600 is load-capable at 200 % (7,200 W) and manages peaks up to 500 % (18,000 W) – with a pure sine wave (pure sine wave) that protects high-inrush, inductive loads.
Robustness: Dust, moisture, impacts. Protection class IP54 is a must for the rough day-to-day of the construction site.
Fast recharging: When the battery is empty, every minute counts. The GM 3600 charges in approx. 115 minutes – significantly faster than comparable all-in-one units.

Diesel generator or battery power generator?

The classic petrol/diesel generator is increasingly being pushed out on the emission-free construction site: exhaust fumes, noise, fuel logistics and driving bans in low-emission zones all speak against it. An off-grid battery power generator like the GM 3600 delivers the same 230 V socket – only emission-free, quiet and low-maintenance. This also makes it suitable for indoor spaces, night-time and weekend construction sites where a combustion engine is not permitted.

GM 3600: the high-performance alternative to the Instagrid ONE

The GM 3600 closes exactly the gap between power stations that are too small for tradespeople and heavy generator-based solutions – as a certified, integrated industrial storage unit (no DIY build, closed BMS). In practical and lab testing, it shows that the performance is not just a data-sheet promise:

Lab test – 2× rated power: On the 20 kW RLC test rack the GM 3600 runs stably even at ≈ 7,200 W (200 % overload) – clean sine, no throttling. Peaks up to 18,000 W (500 %).

Direct comparison: GM 3600 vs. Instagrid ONE

Feature	GM 3600	Instagrid ONE*
Continuous power	3,600 W	3,600 W
Peak power	18,000 W (500 %) · 7,200 W (200 %) continuously load-capable	18,000 W peak
Capacity	~2.1 kWh (2,134 Wh)	~2.1 kWh (2,100 Wh)
Weight	20.4 kg	~20 kg
230 V outputs	230 V Schuko · pure sine	230 V Schuko · pure sine
Charging time	~115 min	~2.5 h
Noise	quiet (low-fan)	quiet
Emissions	0 (emission-free)	0 (emission-free)
Protection class	IP54	IP54
Price (net)	from 2,999 €	3,690 €

Good to know: The Instagrid ONE is also sold under the brands Hilti (B 3600) and STIHL (PS3000) – identical devices of the same 3.6 kW class based on Instagrid technology. The GM 3600 is the economical alternative to all three – same power class, from 2,999 € net.

*Instagrid ONE / Hilti B 3600 / STIHL PS3000: public manufacturer/dealer information (as of 06/2026, net). Comparison for informational purposes.

Honestly compared: which device for what?

A fair comparison also names the strengths of the original. In favour of the Instagrid ONE is the established brand with a large service and rental network as well as long market experience – anyone who needs a pure brand argument or a nationwide rental offering is in good hands there.

In favour of the GM 3600 is the price-performance ratio: the same 3.6 kW class and 18 kW peak, with somewhat more capacity (2,134 Wh) and faster charging (~115 min) – for from 2,999 € instead of 3,690 € net. The weight is practically identical (GM 3600: 20.4 kg, Instagrid ONE: ~20 kg). In short: anyone looking for the same power class at a significantly better price is cheaper off with the GM 3600; anyone who values a brand/rental network pays a premium for the original.

Further guides: Inrush current & 18 kW peak power · Power station for welding machines · Power requirements of construction-site tools · Battery power generator vs. diesel generator · Hilti B3600 alternative · Stihl PS3000 alternative · Mobile power supply for the construction site · all guides

Advantages & disadvantages at a glance

Advantages GM 3600

Around 1,000 € cheaper than the Instagrid ONE in the same 3.6 kW class
200 % overload (7,200 W) stable in lab testing, 18,000 W peak
More capacity (2,134 Wh) and faster charging (~115 min instead of ~2.5 h)
230 V Schuko with pure sine wave for high-inrush, inductive loads
Emission-free, quiet, IP54 – for indoor, night-time and weekend construction sites

Honest disadvantages

Instagrid shaped the market and is better known as a brand on construction sites
No nationwide rental and service network like the original
Service logistics run via Green MeOH, not via a construction-machinery rental company
For continuous loads > 3.6 kW, several units are needed – as with all devices in the class

Use cases: where the GM 3600 shines on the construction site

Welding machines & heavy power tools: the mobile battery box for heavy power tools – high peak power for inverter welding machine, rotary hammer and cut-off grinder.
Emission-free indoor and night-time construction site: off-grid power supply without exhaust fumes – even where generators are banned.
Site lighting & events: stable 230 V supply for floodlights, trade fair, roadshow or off-grid event.
Charging battery tools: runs chargers from DeWalt, Milwaukee, Hilti or Stihl directly on site – tool batteries are charged off-grid, without a mains connection.

Note on DIY solutions: Tool batteries (DeWalt/Milwaukee) can be converted into a power station for light loads – for heavy, certified construction-site applications an integrated storage unit is more reliable. More on this in the GM 3600 guide.

Frequently asked questions (FAQ)

What is the best Instagrid alternative for the construction site?

The GM 3600: 3,600 W continuous power, load-capable at 200 % overload (7,200 W), 500 % peak (18,000 W), 2,134 Wh, pure sine, IP54, approx. 115 min charging time – emission-free and quiet, from 2,999 € net instead of 3,690 €.

Can a battery power generator run a welding machine?

Yes, provided the inverter can handle the inrush/peak power. The GM 3600 is load-capable at 200 % (7,200 W) and manages peaks up to 18,000 W – with a pure sine wave for inductive loads such as inverter welding machines.

Is it suitable for the emission-free construction site?

Yes – completely emission-free and quiet, with no exhaust fumes. Suitable for indoor spaces, night-time construction sites and low-emission zones where diesel generators are not permitted.

Can I charge DeWalt or Milwaukee batteries with it?

Yes. Via the 230 V Schuko outputs you run standard chargers off-grid – including those from DeWalt, Milwaukee, Hilti or Stihl.

Buy or rent Instagrid – or choose an alternative?

Anyone wanting to buy or rent an Instagrid ONE should compare the price: the Instagrid ONE is around 3,690 € net. The equally powerful GM 3600 is available from 2,999 € net – the same 3,600 W continuous power and 18,000 W peak, more capacity and faster charging. For many businesses, buying the alternative is cheaper than buying or renting the original.

Instagrid price vs. GM 3600 – how big is the difference?

Instagrid ONE: approx. 3,690 € net. GM 3600: from 2,999 € net – around 1,000 € cheaper at comparable performance (3.6 kW continuous, 18 kW peak, 2,134 Wh, IP54, pure sine).

Is the GM 3600 also an alternative to the Hilti B 3600 and STIHL PS3000?

Yes. The Hilti B 3600 and STIHL PS3000 are based on Instagrid technology and are in the same 3.6 kW class. The GM 3600 covers the same power class – 3,600 W continuous, 7,200 W at 200 % overload, 18,000 W peak, 2,134 Wh, pure sine, IP54 – at a significantly lower price from 2,999 € net.

Instagrid experiences – is the alternative worth it?

Instagrid shaped the market for mobile 230 V grid-replacement units and gathered good experience. The GM 3600 offers the same power class with proven overload resistance (200 % / 7,200 W stable in lab testing) at a significantly lower price – an economical alternative for construction sites, landscaping and service vehicles.

Conclusion: the right power station for your construction site

Anyone looking for off-grid 230 V site power in the 3.6 kW class gets an equally powerful, cheaper alternative to the Instagrid ONE with the GM 3600 – with proven overload resistance, fast charging and IP54, emission-free and quiet. Technical details & measured values: product page & comparison · technical guide to construction power.

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Instagrid, DeWalt, Milwaukee, Hilti and Stihl are trademarks of their respective owners. Green MeOH has no business relationship with these companies; they are mentioned solely for the purpose of objective comparison and to indicate compatibility. Price and performance details as of 06/2026, net plus VAT, subject to change.