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  1. #1
    Reputation: pimpbot's Avatar
    Join Date
    Dec 2003

    Multiple balancers?

    Hey all,

    I've been running the MagicShine stock batteries, and as we have all seen, it seems one cell goes bad and the whole pack loses it's shiz.

    They run Series-parallel 4 cells with a balance circuit between the two parallel stacks. Seems one cell in the parallel pair goes bad.

    I've seen sell the balancing circuit for like $5. Seems to me you could use two balance circuit boards for 4 cells, or 3 circuits for 6 cells and each cell would be properly regulated and none of the cells would be left for dead. Then, attach the load/charge side of the circuits in parallel.

    Any reason why this wouldn't work?

  2. #2
    mtbr member
    Join Date
    Sep 2007
    Quote Originally Posted by pimpbot
    Any reason why this wouldn't work?
    Anything below $10 won't properly balance the cells.
    A "true" balancing PCB costs around $15
    CNC LED light housing for DIY projects

  3. #3
    mtbr member
    Join Date
    Apr 2008
    Cells wired in parallel are naturally balanced with each other. So a 2S2P pack like the one used by the MagicShine only needs a 2-cell balancer, like this one:

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