NIAPCO No-Idle Auxiliary Power Company

Shut the engine off. Keep the cab cool.

NIAPCO builds battery power and 12‑volt air conditioning kits for semi-truck sleeper cabs. Tell us your truck, pick a tier, and get a kit with every cable cut to length, fused and labeled for your cab.

Get a quote for your truck Compare the kits
A driver's daily log A 24-hour duty log. Ten hours in the sleeper berth, split across midnight, with the engine off the whole time. The engine runs only from 5 a.m. to 5 p.m. while on duty and driving. Mid 1 2 3 4 5 6 7 8 9 10 11 Noon 1 2 3 4 5 6 7 8 9 10 11 Mid Hrs Off duty 2.5 Sleeper berth 10 Driving 10.5 On duty 1 Engine Running Running Off, on battery Off, A/C on battery
A driver's day on the log. Ten hours in the sleeper berth used to mean ten hours of idling. With a NIAPCO kit, the engine runs only when the truck is working.

What a night of idling costs

A sleeper truck idling through a rest break burns fuel, puts hours on the engine and keeps the driver up with the noise. Many states and cities also limit idling.

A battery system takes over the overnight loads: air conditioning, the fridge, a CPAP, the microwave and the TV. The alternator recharges it while you drive, and shore power tops it off when it's available.

Rough estimate. Actual burn depends on the engine, the weather and how the truck is set up.
Idle fuel burn0.8 gal per hour
Overnight idle8 hours
Nights on the road250 a year
Diesel burned idling1,600 gal a year
At $5.00 a gallon$8,000 a year

Three kits, matched to your truck

Every kit is built around Victron Energy power electronics and lithium iron phosphate (LiFePO4) batteries. Start with what you need to run overnight, then pick the kit that covers it.

HotelFridge, microwave, CPAP, TV and laptop through the night ClimateEverything in Hotel, plus air conditioning through a summer night All-seasonEverything in Climate, plus diesel heat and roof solar
Lithium battery bankAbout 300 Ah at 12 VAbout 460 Ah at 12 VAbout 600 Ah at 12 V
Inverter and chargerVictron MultiPlusVictron MultiPlus-IIVictron MultiPlus-II
Charging while you driveOne Victron Orion XS DC-DC chargerTwo Victron Orion XS DC-DC chargersTwo Victron Orion XS DC-DC chargers
Shore powerExterior inlet with chargingExterior inlet with chargingExterior inlet with charging
Air conditioningNot includedDometic RTX 2000, 12 VDometic RTX 2000, 12 V
HeatNot includedNot includedWebasto Air Top 2000 STC diesel heater
SolarNot includedNot includedRoof panels with a Victron solar charge controller
MonitoringBattery status on your phoneVictron Cerbo GX, with remote monitoringVictron Cerbo GX, with remote monitoring
Wiring and mountingHarness cut to length for your truck, Class T battery fusing, labeled connections, mounting hardware and a wiring diagram for your exact build

Climate and All-season kits pull more from the alternator than most stock setups are built for. We'll tell you whether your truck needs a high-output alternator, which a shop installs separately. Kit contents are being finalized for launch and may change.

How it works

You shouldn't have to design a power system to buy one. We do the sizing and the wiring plan; you get a box of parts that fits.

  1. Tell us your truck

    Make, model, year and sleeper size. That sets cable lengths, mounting locations and where the A/C unit goes.

  2. Pick a kit

    Hotel, Climate or All-season. We'll check it against what you plan to run and how long you sit.

  3. Get it shipped

    Components ship ready to mount, with the harness, fusing and a wiring diagram drawn for your truck.

  4. Install it

    Do it yourself with the guide, or take it to a shop. We'll point you to installers who know these systems.

Trucks we're mapping first

We're documenting mounting points, cable runs and sleeper layouts for the most common sleeper trucks first. If yours isn't listed, send it anyway.

  • Freightliner Cascadia
  • Kenworth T680
  • Kenworth W900
  • Peterbilt 579
  • Peterbilt 389
  • Volvo VNL
  • International LT
  • Mack Anthem

Get a quote for your truck

This opens an email to us with your truck's details filled in. We reply with a kit recommendation and a price.

About NIAPCO

NIAPCO, the No-Idle Auxiliary Power Company, is a small Utah company. It was started by Kaden Olson, who spent years designing and installing off-grid power systems on RVs and boats.

The kits use the same approach that works on the water and in the backcountry: proven Victron electronics, lithium iron phosphate batteries, proper fusing and wiring you can trace. The difference is the truck. Each kit is planned around a specific cab, so the install is a weekend, not a design project.

Fleets and install shops: we quote multi-truck orders and work with shops that want a repeatable no-idle install.

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