title: Draeger-Evita 2 Dura, Evita 4, and Evita XL intensive care ventilators: must be operating or in standby mode for batteries to charge.
mesh_terms: D011211:Electric Power Supplies; D019544:Equipment Failure Analysis; D006801:Humans; D007362:Intensive Care Units; D061214:Patient Safety; D012122:Ventilators, Mechanical