Shop cpapXchange online or call 866-992-7279

Battery Pack for Transcend Series CPAP Machines

Whether you're on the road, in a plane, off the beaten path, or at home in bed the Transcend's CPAP battery won't weigh you down.

The Transcend P4 Overnight Battery System weighs just over half a pound, and the P8 Multi-night Battery System tips the scales at 1.1 pounds. No other CPAP battery comes close!


  • Use your Transcend anywhere -- even in the most remote locations
  • Lightest CPAP batteries available
  • FAA Approved for Use on Commerical Flights
  • Uninterrupted backup power during power outages
  • Rechargeable with both AC and DC power
Read More

Manufacturer: Somnetics
Part Number(s): 503026, 503023
GTIN Number(s):
In the Box: 4 or 8 Cell Transcend Lithium-Ion Battery
Warranty: 9-Months Manufacturer's Limited Warranty
HCPCS Insurance Code(s): E1399

Battery Power: Rechargeable Lithium Ion
Battery Dimensions: P4 Battery 4.10 x 3.15 x 0.90 Inches; P8 Battery 4.35 x 3.15 x 1.65 Inches (Approximate)
Battery Weight: P4 Battery .6 Pounds; P8 Battery 1.1 Pounds (Approximate)
Battery Runtime: P4 Battery 7-9 Hours at 12 cm H2O; P8 Battery 14-16 Hours at 12 cm H2O. (Average)
Battery Recharge Time From Fully Depleted: P4 Battery Less Than 5 Hours; P8 Battery Less Than 8 Hours (Average)
Battery Recharging: AC, DC or Solar Power. (Transcend battery packs can be charged using the Transcend CPAP machine's AC Power Cord or via the optional Transcend Mobile DC Power Adapter or the optional Transcend Solar Charger.)
Battery Life: Approximately 300 Charge Cycles
Battery Type: Lithium Ion
Battery Voltage: 14.4 V
Battery Notes: For best performance battery packs should be fully charged prior to first use. High pressure settings and other external conditions (i.e. high mask leak rate, high respiratory rate, high altitude, tubing over 6 feet long, etc) will decrease battery run times; lower pressure settings will increase battery run times. Transcend batteries can be plugged into the Transcend device at all times and will recharge as needed when AC or DC power is available. For full usage instructions please review the user manual that came with your machine.
FAA Compliant. This product is approved by the FAA for use on all commercial flights within the US and all international flights that depart or arrive in the US. Always contact your airline prior to your flight to confirm any requirements they may have -- such as a copy of your prescription or a letter of medical necessity -- for allowing your device on board.

Related Products


Customer Reviews

  • Amazing!

    The help I received online to purchase the correct product for me and the product itself was all amazing! It even works with another CPAP brand that I had at home.
    Written by lcrumcliff, 2018-08-03

  • Replacement Battery

    The battery arrived in two days and in good condition. The battery is working well.
    Written by Bruce E. W., 2016-08-16

  • two day battery pack

    I use the multi night battery pack and even with all the accessories and the machine it is lighter than my old CPAP and much easier to carry with me hiking or on a plane.
    Written by MA Guy, 2013-12-24