How to calculate the number of strings for ternary lithium batteries

作者: admin
发布于: 2025-10-24 14:13
分类: Industry News News

 

The fully charged voltage of a single NCM/NCA cell is 4.20 V. Formula for calculating the number of strings:

Number of strings = Full-charge voltage of battery pack ÷ 4.20 V

Example
- 48 V battery pack: 48 ÷ 4.20 ≈ 12 strings (actual 12 × 4.20 = 50.4 V).
- 60 V battery pack: 60 ÷ 4.20 ≈ 14 strings (actual 14 × 4.20 = 58.8 V).

Remember: 21.0 V indicates a fully charged 5-string NCM battery pack (4.20 V × 5).

推荐文章

  • 06-23 2026
    Focused on harsh operating conditions such as outdoor rain exposure, humid environments and bumpy transport, we developed this dedicated 29.2V 15A waterproof LiFePO4 battery charger. Custom-tailored for 8S 24V/25.6V lithium iron phosphate batteries, it resolves common pain points of universal chargers including poor compatibility, burnout caused by water ingress outdoors, and excessive heat generation during fast charging. Featuring robust waterproof construction and reliable charging performance, it delivers all-round safe charging for outdoor applications. With a rated output power of 600W, it meets long-term charging demands of various outdoor lithium battery-powered devices.   I. Core Charging Parameters – Optimized for LiFePO4 to Protect Battery Health   This charger operates at a fixed constant voltage of 29.2V and constant current of 15A...
  • toolbar
    toolbar
  • toolbar
    +86-18924633187
  • toolbar
    返回顶部