Replacement battery for Laryngoscope Mac Video EACH. Specifications: 800mAh, 3.6V, Li-SOCl2. Compatible with: Laryngoscope Mac Video EACH, MC GRATH MAC, McGrath MAC Video Laryngoscope. Replaces: Medtronic 340-000-000, McGrath 340-000-000. Medtronic replacement battery designed for Medical devices. Built to OEM specifications for reliable performance.