The outstanding features of this electronic switch-mode mains PSU are its low weight and ultra-compact, low-profile construction. It features a new type of technology which eliminates the use of large, heavy transformers. The mains PSU is a superb choice for powering battery chargers. The unit allows the use of very high charge currents, and is the perfect choice for the ULTRA DUO PLUS 50 as it permitsthe use of the charger's maximum charge output. Specification: Input voltage: 220 - 240 V AC 50 Hz. Output voltage: 13,8 V. Output current: 12 A. Dimensions: 170 x 170 x 85 mm. Weight: 1,100 g.