RecommendedDouble / three bedroom houseBattery Backup Time2 to 4 HoursInverter Model & WaveformExide Inverterz 1450VA Sinewave outputBattery Model & CapacityExide Invatubular IT500 150AH Tall TubularInverter Warranty2 Years On-site warrantyBattery Warranty54 Months (42M Replacement Guarantee+12M Pro-rata warranty)DeliveryWithin 12 hours