3.7V 18650 low temperature lithium ion battery 1S2P 2 cells

Use low temperature cylindrical type 18650 cells to make 3.6V lithium ion battery packs , 2 low temperature cells to make 1S2P lithium battery pack.


  • Custom PVC 1S2P 3.6V/3.7V low temperature lithium ion battery packs.
  • It can be used for any DC powered products which need a internal DC output lithium ion battery that work @ low -40°C to high 85°C.
  • The rated capacity usually between 4Ah to 5.8Ah, total energy usually less than 50Wh.


Model No. FP-LH-1S2P
Nominal Voltage 3.6V / 3.7V
Output voltage range 2.8V(2.8V=2.8V*1) to 4.2V(4.2V=4.2V*1)
Nominal Capacity 4Ah to 5.8Ah
Cell Type -40°C to 85°C Cylindrical 18650 cell
Series Parallel Connection 1S2P
Discharge current 1A  to max 5A
Size Around 21*21*70mm
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 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 Lithium Battery Pack

Basic Knowledges

Production Knowledges

Shipping Knowledges

Certificate Knowledges

Use & Storage Knowledges

Quality guarantee of 1S2P lithium ion 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 1S2P lithium ion 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 info@flionpower.com ;
  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 1S2P lithium ion battery

  • All DC powered portable electric products, like portable outdoor meters, outdoor CCTV cameras
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