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  1. #1
    RC poster
    Join Date
    Apr 2012
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    12

    Use of different mah with lipo batteries in series possible?

    Hello,

    I have 2* 2S lipos 4000 mah batteries mounted in series which I use in my bruhssless E-Revo (hobbywing EZrun 2200 Kv).

    I'm considering upgrading to 5s, and my local dealer sells 3s batteries (same brand) but with capacity of 4200 mah.

    I've read the posts, and it seems that capacity must be the same for both batteries used in series.

    Could someone let me know what would be the consequences of using one 2S 4000 mah together with one 3S 4200 mah? May I do that?

    Many thanks for your answers already!

  2. #2
    RC Turnbuckle Jr. humayrayakongkinaon's Avatar
    Join Date
    May 2011
    Location
    Long Beach, California
    Posts
    6,454
    i believe it has to have the same C ratings too. one will descharge faster than the other and can ruin your lipo, if your lipo get descharge really low you might not be able to bring it back up.
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  3. #3
    RC Turnbuckle Jr. mike-susieq1's Avatar
    Join Date
    Nov 2010
    Location
    California
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    4,840
    he has it correct it will discharge faster since they are not even, the # of cycles has to be the same, C rating, MAH has to be the same. if not then what humayrayakongkinaon said will happen.
    DEU 8:18 ESV

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