The Largest Cooling Capacity Battery APU Redefines Truck Comfort and Efficiency
In a major leap forward for sustainable trucking technology, Corunclima has unveiled what is now recognized as the largest cooling capacity battery APU (Auxiliary Power Unit) in the electric truck market — a breakthrough system engineered to deliver diesel-level cooling power without the emissions, noise, and fuel waste associated with traditional APUs.
Designed to meet the rigorous demands of long-haul cab climate control, the Corunclima K50BS model boasts a cooling capacity of up to 15,000 BTU (4.4 kW) — effectively matching the performance of many conventional diesel APUs while operating entirely on battery power. This makes it one of the most powerful all-electric APUs available today, setting a new standard for idle-free comfort.
What sets the K50BS apart is not just its raw cooling power. With a high airflow rate of approximately 1000 m³/h (589 CFM) it rapidly transforms sleeper cabins into comfortable environments even in extreme heat, ensuring drivers can rest properly without idling their engines.
At the core of this system is a heavy-duty DC electric scroll compressor paired with robust lithium battery packs (available in capacities like 460 Ah and 560 Ah). These batteries support 10–12 hours of continuous cooling, with extended runtime options for deeper cold-climate operation or longer rest periods.
Unlike engine-driven APUs, the K50BS operates with zero emissions, significantly reducing environmental impact and helping fleets meet stringent anti-idling regulations — particularly in urban centers and regions with aggressive clean-air mandates. By eliminating fuel consumption during idle periods, trucking companies can also achieve notable cost savings, from reduced diesel usage to lower engine maintenance demands over the unit’s lifecycle.
Driver comfort remains a central focus of the new battery APU design. Near-silent operation ensures minimal noise disturbance during overnight rest, while consistent cooling performance helps maintain a stable cabin temperature no matter how hot the external climate. This not only enhances driver well-being but can also contribute to better safety and alertness on the road.
Corunclima’s commitment to reliability is further underscored by product warranties and design longevity — with the APU engineered for a service life of up to 10 years and backed by robust after-sales support.
As the trucking industry increasingly embraces electrification across powertrains and auxiliary systems alike, solutions like the largest cooling capacity battery APU represent a critical step toward greener, more efficient fleet operations. By delivering diesel-comparable performance without the environmental downsides, these electric APUs are helping redefine what modern transportation logistics can achieve — enabling fleets to enhance driver comfort, cut operational costs, and reduce emissions in one comprehensive package.