JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Very clever active cell balancer for lithium-ion battery packs, which can transfer energy from any cell to its immediate neighbour using tiny switched-mode energy transfer modules. The transfer modules are bi-directional, so energy can be transferred either up the series string, or down.
Active Balancer BMS 3S 4S 6S 7S 13S 16S Equalizer Battery Energy Transfer Board https://ebay.us/G4Jpu7
2S ~3S 5S 10S ~17S Li-ion Lifepo4 LTO Battery Active Equalizer BMS 1.2A Balancer https://ebay.us/gxPguo

By Julian

Youtuber, shed dweller, solar charge controller aficionado

12 thoughts on “Active cell balancer for lithium ion battery packs”
  1. Avataaar/Circle Created with python_avatars Dan Tronics says:

    Hi Julian, I know this is a bit delayed but quick question, If you had those super capacitor connected to a battery pack (LIFEpo4) would they discharge the batteries? I;m just about to make a battery pack and was thinking of adding some supercaps but trying to decide whether to connect on the batteies or after the switch

  2. Avataaar/Circle Created with python_avatars Nick Hunter says:

    Does not this module decrese the lifespan of the batteries quicker? Passive balancing takes the energy from one battery only, contributing to its charging/discharging life cycle. But when you are charging one battery by another battery, you decrese the lifespan of both batteries.

  3. Avataaar/Circle Created with python_avatars firepower9966 says:

    they make them up to 20S also

  4. Avataaar/Circle Created with python_avatars Johnny says:

    I read somewhere you have to run power through the pack for this to work? I'm getting mine today hopefully it'll work for what I need.

  5. Avataaar/Circle Created with python_avatars Tony Dickerson says:

    I've got a few of these from 4s to 16s but my 13s blew its IC between cell 3 and 4, measured the resistance on these cables and got 10 ohms, seen a few videos of these bursting into flames on first use, build quality variable, so now I'm trying to identify the IC so I can replace it, hoping to reverse engineer it and make my own.

  6. Avataaar/Circle Created with python_avatars Minra Vex says:

    Pls show me diagram for connecting 6s balancer to 6sbms

  7. Avataaar/Circle Created with python_avatars Marc Rives says:

    Hi, do you know what kind of connector the board has? I'm struggling to find that information.
    Thanks!

  8. Avataaar/Circle Created with python_avatars ZaidUdin ZaidUdin says:

    Real tranfer 1.2a?

  9. Avataaar/Circle Created with python_avatars caskwith says:

    Anyone know what kind of connectors this board uses?

  10. Avataaar/Circle Created with python_avatars Z R says:

    Could u daisy chain then on a big battery to balance the whole battery?

  11. Avataaar/Circle Created with python_avatars troyguererro 08 says:

    Do not buy this. Mine burst into flames after 6 months. Also, there are other reviews that proves that this balancer is not a legitimate active balancer.

  12. Avataaar/Circle Created with python_avatars DIY AND ASSEMBLING says:

    Your video helps us to know basics better.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.