Vanner has been delivering engineering excellence in power conversion and power transformation for commercial vehicles in nin ... e markets since 1977. Vanner is a leader in commercial transportation and designs and delivers patented high quality, cost-effective and environmentally responsible products and services in the U.S. and around the world. We are problem-solvers who work closely with companies of all sizes in each market to design, develop and deliver an advanced line of custom and standard power transformation products and solutions including: High Voltage DC-DC Converters, Idle-Reduction Systems, Ultracapacitor Start Assist Systems, Model-based Battery Monitoring, Battery Equalizers with Internal Battery Monitoring and J-1939 CAN Bus Communication, and our broad offering of AC Power options. We also deliver best-in-the industry static and dynamic inverters, battery chargers, isolators, converters, equalizers, throttles and accessories. read more