Battery P/N: 6PH-H-4/3A3600-S-D22 ^^ Fit Model for ADT Impassa wireless alarm systems for DSC Impassa 9057 Wireless Control Panel ^^ Alarm System battery Capacity 3700mAh Type Ni-MH Voltage 7.2V Rate 26.64W h ^^ Dimension 101.40 x 68.30 x 17.20 mm Net Weight 301.0 g / 10.62 oz Gross Weight 336g / 11.85 oz ^^ No memory effect, overcharge, overdischarge, overheat, overcurrent and short circuit protection. High-capacity cycle function, perfect replacement for original battery. Triple quality certification by Rosh, Ce and UL.