Draeger Evita, Savina XL, 2, 4 Ventilator Battery (Internal) (Sonnenschein) (Req. 2/unit)Draeger Evita, Savina XL, 2, 4 Ventilator Battery (Internal) (Sonnenschein) (Requires 2 Per Unit) Volts: 12 Volt Capacity: 3. 5 Ah Chemistry: SLA VRLA Weight: 3. 3 Dimensions: 5. 28 x 2. 64 x 2. 52 Type Replacement DRAEGER (NARCO, SIEMENS) Evita, Savina XL, 2, 4 Ventilator (Internal) (Sonnenschein A512 3. 5 S) (2 unit)