The Transcend P4 Battery is a powerful 14.4 VDC, 4-cell, rechargeable lithium-ion battery.The battery weighs just about 10 ounces and is extremely compact with dimensions of 4.1" x 3.15" x 0.9". If you're looking for a portable battery solution for the Transcend II and Transcend 3 CPAP machine, you've found it!
The manufacturer has tested the battery at a pressure of 14 cm H2O (which is a relatively high pressure setting) and has found typical battery run time to be 7 hours. At lower pressures, the battery will last even longer.
Since battery life is dependent upon pressure setting, atmoshpheric pressure, altitude, temperature, and possibly other factors, we highly recommend testing the battery before you need it when away from power.
