Trilogy Battery Pack

Battery Pack , Detachable for T70 Cough Assist and Trilogy 100, 200, 202 Ventilators. This battery charges inside the Trilogy unit. No additional cords are needed. Philips Respironics recommends that each Trilogy unit have this battery to use as its main battery source, and to only use the internal battery as a last resort. It lasts roughly 3 hours.