Using a Power Station for a Food Truck: Wattage Guide

Most light-service food trucks (POS, lighting, a small fridge, phone charging) need 800-1,500Wh per service day — but the only way to know your real number is an honest wattage inventory of your actual equipment, not a guess. Here's how to do it correctly.

Step 1: List Every Device and Its Wattage

Check the label or spec sheet on each piece of equipment for its running wattage (not just amps — multiply amps × 120V if only amps is listed). Common food truck/vendor equipment:

Equipment	Typical Running Watts
POS system/tablet	10-20W
String/task lighting	20-60W
Small fridge or cooler	60-150W (average, with cycling)
Blender (intermittent use)	300-1,000W
Small induction burner	1,000-1,800W
Phone/tablet charging	10-20W each

Step 2: Separate "Always On" From "Occasional Use"

Your continuous, always-on loads (POS, lighting, refrigeration) determine your baseline capacity need over a service day. Occasional-use, higher-draw equipment (blenders, warming equipment) determines your required continuous output rating, even if you don't run them constantly — your power station needs to handle the peak moment when multiple things run at once.

Step 3: Calculate Total Daily Watt-Hours

Multiply each device's wattage by its hours of use during a service day, then sum the total — this gives you your target capacity. A typical light-service setup (POS, lighting, small fridge, occasional phone charging) runs 800-1,500Wh over a full service day; see our full best power station for food trucks comparison for model recommendations once you have your number.

Step 4: Add a Safety Margin

Add 20-30% above your calculated need to account for colder weather (which reduces battery efficiency), unexpectedly long service days, or equipment you forgot to include in your initial inventory.

What NOT to Run on a Power Station

Heavy cooking equipment — griddles, deep fryers, large ovens — routinely draws 1,500-3,000W+ continuously, which exceeds what most portable power stations can sustain for a full service day without an oversized, expensive system. Keep primary cooking equipment on propane or a dedicated generator, and reserve your power station for lighting, POS, refrigeration, and smaller appliances.

The same sizing approach applies to other vendor and commercial-adjacent setups — see our guides on construction site power stations and power stations for music festivals and events if either is closer to your use case.

A Worked Example: Full Service Day Calculation

Putting the steps together for a typical light-service cart:

Equipment	Watts	Hours	Watt-Hours
POS tablet	15W	8h	120Wh
Task lighting	40W	6h	240Wh
Small fridge (cycling avg)	80W	8h	640Wh
Phone charging	15W	2h	30Wh
Subtotal			1,030Wh
+25% safety margin			~1,290Wh

That lands squarely in the 800-1,500Wh range most light-service trucks need — a unit like the EcoFlow Delta 2 Max covers this with room to spare and fast recharge overnight. Run the same table with your own equipment's actual labeled wattage for a number specific to your setup.

Generator vs. Power Station for Food Trucks Specifically

Beyond the noise and emissions difference covered elsewhere on this site, food trucks have a specific consideration: customers standing at your service window. A generator's noise and exhaust fumes sit right where people are ordering food, which is a real customer-experience cost beyond the practical logistics — a power station removes that entirely for everything except heavy cooking equipment. See our power station vs. gas generator comparison for the fuller general tradeoff.

Frequently Asked Questions

How do I find the wattage of equipment that only lists amps?

Multiply the amp rating by your outlet voltage (120V for standard US outlets) to get watts — for example, a device rated at 5A draws approximately 600W (5 × 120). Our watts to amps calculator does this conversion instantly if you'd rather skip the manual math.

Can I run my whole food truck on battery power alone?

For lighting, POS, refrigeration, and small appliances, yes with proper sizing. For primary cooking equipment, most food trucks still rely on propane or a generator, since the wattage requirements exceed what's practical for battery power alone.