On Order Tsi Inc Medical Battery Li-ion Battery fits Tsi Inc, Certifier Fa Plus Ventilator 7.4V, 2200mAh CS-TNC408MD $43.42 The battery that is shown here is manufactured using the best designed components and the highest quality parts. Batteries come in a variety of different formats, often a single model of battery will actually replace hundreds of other models in a multitude of different devices. The manufacturers of many devices have assigned different part numbers to... Add to cart