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  1. #1
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    Question Quick question for ezee bikes

    A friend of mine has an ezee sprint bike, and the battery has recently died.

    In the manual it states that it uses a 36v Li-ion battery pack.

    Now, am I right to assume that they are using 10 cells in series?

    Li-ion cells tend to spend a lot of time at around 3.7v, but they tend to be 4.2v when fully charged so a 10 cell battery pack would give 42v when fully charged.

    I ask as I'm looking into building a replacement battery pack for him, and was wondering if 42v was to much power for the ezee controller and motor?

    THanks.


  2. #2
    xtrajack xtrajack's Avatar
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    I have an Ezee front hub motor (36v 450 watts).

    When I take my battery off the charger and hook it up, the Cycle Analyst shows it at 42.7 volts. I haven't noticed any issues. The motor and controller seem to be okay with it.

    I will soon be in the market for a new battery myself, unfortunately the shop I dealt with has gone out of business.
    2008 Kona Fire Mountain/Xtracycle
    [SIGPIC][/SIGPIC]
    I void warranties.
    Cycling well IS Cycling Advocacy
    Originally Posted by Steely Dan: if you're riding a bike and not having fun, then you're doing it wrong.

  3. #3
    Senior Member
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    Quote Originally Posted by xtrajack View Post

    I will soon be in the market for a new battery myself, unfortunately the shop I dealt with has gone out of business.
    You are in luck xtrajack...there's a Ping battery group buy going on right now (http://www.bikeforums.net/showthread...tery-Group-Buy).

  4. #4
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    Quote Originally Posted by xtrajack View Post
    I have an Ezee front hub motor (36v 450 watts).

    When I take my battery off the charger and hook it up, the Cycle Analyst shows it at 42.7 volts. I haven't noticed any issues. The motor and controller seem to be okay with it.

    I will soon be in the market for a new battery myself, unfortunately the shop I dealt with has gone out of business.
    Thanks, I have now finished building the battery pack and wanted to be sure I wouldn't damage anything before hooking it up. THe pack reads 42.5v and this is with all the cells fully charged.

    I now just need to a few extra things like add in a fuse and a different battery connector, and maybe a faster charger and I should be able to get this bike going again.

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