Last updated: June 8, 2026
A straight-shooting power calculator for food truck and trailer operators who want to ditch the generator — without getting a sales pitch.
Most "battery sizing" online either comes from a battery brand trying to sell you their largest pack, a solar installer working off a residential template, or a forum thread from someone with a different rig than yours. None of that gets a working truck operator to a reliable spec.
We built FoodTruckBattery.Com because the people who actually run trucks deserve a tool that:
In about five minutes you describe your rig — shift length, truck type, what's plugged in. The calculator returns running watts, peak watts, daily energy use in watt-hours, a recommended battery capacity in kWh, and an inverter size with the right surge headroom.
It uses a published equipment database with real nameplate ratings, duty-cycle profiles tuned per device type, and the same NEC-style rules a licensed installer would apply for circuit sizing. If a unit is high-draw, we'll tell you. If propane is the smarter call for a specific item, we'll say that too.
The site is built and operated by an independent product team that has spent years working on calculation engines, electrical systems, and small-business tools. We're not a battery manufacturer, not a solar installer, and not affiliated with any single vendor. That's deliberate — it's the only way the recommendations stay honest. See real examples on the battery-powered food truck guide.
If you want to suggest improvements, report a bug, or tell us we got something wrong about your rig, we read every message: info@foodtruckbattery.com.
The site is in open beta. The calculator engine is locked and validated against real-truck benchmarks, but we're actively polishing the UI, adding equipment models, and refining the spec output based on operator feedback. Expect occasional updates. If something looks off, please tell us.
Free calculator — size a system from your equipment list, your generator's specs, or its fuel burn, then take the spec to any vendor or click Buy Now.