Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 3 of 3

Thread: Is a non-balancing BMS safe if each cell has individual protection?

  1. #1

    Is a non-balancing BMS safe if each cell has individual protection?

    I have have 5 3.7V cells that each have some kind of protection circuit on them connected to a basic BMS without balancing.

    https://m.aliexpress.com/item/1005001327267228.html

    https://m.aliexpress.com/item/32909360073.html

    Do I need to care about balancing if each battery should check its voltages stay in range? Is it safe and is there anything I need to be careful with.

    As an aside, I want to charge this with 20V from USB-C. Any issues with that?

    Thanks.

  2. #2
    Senior Member
    Join Date
    May 2015
    Location
    USA
    Posts
    1,071
    Be aware of the effect on total pack capacity. Without active balancing, you are limited by the lowest cell capacity. And by any imbalance.

  3. #3
    Thanks for the response. I'm not too concerned about capacity right now - I just want it to work safely.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •