MAX Output: 540 Watts / 900 VA • Output Connections: (3) Schuko CEE 7 (selector_surgetitle), (3) Schuko CEE 7 (Battery Backup) • Input Connections: Schuko CEE 7/7P • Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leak-proof • Warranty: 3 years repair or replace