Vanner's 600V-24V DC-DC Converter, a Hybrid Beltless Alternator (HBA), provides "Smart Electricification" for Allison Transmission's H 40 EP and H 50 EP Hybrid System. It replaces the traditional alternator and improves the efficiency of the power for the buses' 12/24 volt loads. Two HBA power ranges are available: 250A at-idle, which replaces traditional 300A-400A alternators, and a 300A at-idle that replaces traditional 400A-500A alternators. The HBA has a standard three-year warranty and a target life of more than 10 years.