Overload Capacity: 20% for 10 minutes, 50% for 1 minute
External Battery: Yes, designed for connection to external battery bank
Battery Type (if included): SMF-VRLA conforming to JISC:8702(Pt.I,II&III), Stationary Lead Acid Batteries (with tubular positive plates) in monobloc container conforming to IS:13369:1992 latest
Backup Time: Varies based on battery configuration