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    1. · Linsight Designer
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      4,718 Posts
      What you wrote is Honda's official recommendation for charging the IMA pack... it's in several service bulletins. It's not an ideal method, though, as it was more meant to recharge the pack after the car had been sitting on the lot for a long time (because nobody wanted them).

      However, I must point out that you can build your own grid charger for under $50. Just connect this bad boy up to your IMA battery with a proper inline fuse and a reverse blocking diode (to prevent discharge when the car is off), then add a power cord. Next, connect your IMA fan to a 12 volt supply, which you can wire into the same power cord. Now you can just tuck this whole contraption into your IMA bay and then plug in the power cord whenever you want to grid charge.
       
    2. · vote 4 mawah
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      320 Posts
      What you wrote is Honda's official recommendation for charging the IMA pack... it's in several service bulletins. It's not an ideal method, though, as it was more meant to recharge the pack after the car had been sitting on the lot for a long time (because nobody wanted them).
      It's also in the Service Manual, at least for the 2006 HCH2. Dealers were recommended that method, every 30 days for honda hybrid cars on their lots.
      For a new pack it is an OK way to check the packs (SoC), and since the ECU's were still factory fresh, little variation in IMA behavior to deal with, either.

      However, I must point out that you can build your own grid charger for under $50. Just connect this bad boy up to your IMA battery with a proper inline fuse and a reverse blocking diode (to prevent discharge when the car is off), then add a power cord. Next, connect your IMA fan to a 12 volt supply, which you can wire into the same power cord. Now you can just tuck this whole contraption into your IMA bay and then plug in the power cord whenever you want to grid charge.
      Thanks for the writeup and links.
      Now, if there were only a solution for self discharge and (cell / stick level) heath differences seen in older packs, we'd all be set.

      @Recovering_Gasaholic - here's a link to one of Eli s' polls about the effects of how Honda programmed regen charging - asking will the pack self balance and if so how long will it take.
      Can the car recover from artificial imbalance?
       

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