CPAP Machine battery pack 4S5P 26650 LiFePo4 cell 12V 12.8V 15Ah 18Ah 20Ah

CPAP Machine battery pack 4S5P 26650 LiFePo4 cell 12V 12.8V 15Ah 18Ah 20Ah, use 20pcs LiFePo4 26650 cells to to make 12V/12.8V LiFePo4 lithium battery pack.


  • 4S5P 26650 LiFePo4 cell 12V 12.8V 15Ah 18Ah 20Ah CPAP Machine lithium battery pack with 2000+ life cycle.
  • It can be used for any DC powered products which need a internal DC output lithium ion battery.
  • The rated capacity usually between 15Ah to 20Ah.


Model No. FP-PB-LFP-4S5P
Nominal Voltage 12.8V
Output voltage range 8V(8V=2V*4) to 14.4V(14.4V=3.6V*4)
Nominal Capacity 15Ah / 18Ah / 20Ah
Cell Type Cylindrical 26650 LiFePo4 cell
Series Parallel Connection 4S5P
Discharge current 1A  to max 5A
Size 110x140x76mm
Protection Over charge voltage protection, Over discharge voltage protection, Over discharge current protection, Over Charge current protection, High temperature protection, Short Circuit Protection.
Connector Option Cigarette connector, DC connector, XT connector, JST Connector, XLR Connector, Anderson Connector, Aviation Connector, Waterproof Connector
Prototype Lead Time 7-12 days after confirmed details

Knowledges of CPAP Machine battery

Basic Knowledges

Production Knowledges

Shipping Knowledges

Certificate Knowledges

Use & Storage Knowledges

Quality guarantee of CPAP Machine battery


Each battery from Flion will pass electrical features and assembly work quality check and records trackable.


Our batteries can comply with CE/UL/IEC62133/UN38.3&MSDS lithium ion battery standards.


Each battery from Flion comes with a general 12 months warranty, with 18~24 months warranty for option.


With over 12 years design and manufacturing experience of lithium ion battery pack.

Inquiry to Production Process of CPAP Machine battery

Step 1


  • Collect informations of your contact, company, battery requirement.
  • Battery requirement details includes battery voltage, capacity, size, charge/discharge current, application, quantity..etc
Step 1

Step 2

Sending Inquiry

There below 4 ways to send your lithium battery inquiry.

  1. Send to our email ;
  2. Message via What’s App : +86 18911938253 ;
  3. Click the "ENQUIRY" button and submit inquiry form.
  4. Go to "Contact Us" page and finish the inquiry form.
Step 2

Step 3

Solution & Quoting

  • Free lithium battery pack solution design.
  • Professional quotation and reasonable prices.
Step 3

Step 4


  • Make Lithium battery prototype in around 7-12 days.
Step 4

Step 5


  • Sending battery prototype to customer via UPS/Fedex/DHL, 5-9 days.
Step 5

Step 6

Mass production & Certificates

  • Mass production lead time is aorund 15-35 days depands on quantity.
  • CE/UL/IEC62133/UN38.3 certificates can finished in around 2-4 weeks.
Step 6

Applications of CPAP Machine battery

  • All DC powered portable electric products, CPAP machine, portable car refrigerator..etc
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