Some recent AA NiMH batteries

Discussion in 'Digital Cameras' started by David Arnstein, Sep 9, 2006.

  1. There is a respectable consensus that Sanyo makes great NiMH batteries,
    and there is a model with a claimed capacity of 2700 mAH on sale at
    Thomas Distributing.

    Thomas D. also offers a Maha PowerEx cell that claims 2700 mAH.

    Finally, Thomas D. sells an Accupower cell that claims 2900 mAH. Wow!

    I am always in the market for a cell that can hold a high voltage for
    a long time. I have a Sony flash gun that does NOT like low voltage.
    Cells that have slower self-discharge are also nice to have. Finally,
    I carefully avoid shoddy products because I fear damage to equipment
    from leaks or swelling.

    What do you think? Are any of these cells great or what?
    David Arnstein, Sep 9, 2006
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  2. David Arnstein

    Mark Roberts Guest

    Of the ones you mention, I have used only the Powerex 2700 AA
    batteries mentioned above. Personally, I think they're pretty amazing.
    Much longer lasting charge than the Powerex 2300 that they seem to
    have replaced. They seem to hold charge for a long time on the shelf,
    too (for NiMH batteries). I recommend them highly.
    Mark Roberts, Sep 9, 2006
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  3. David Arnstein

    ASAAR Guest

    I'd like to see some tests of unused fully charged cells showing
    remaining capacity with time. Two sets of times would be
    particularly interesting. One would be the number of days it takes
    for the self discharge of regular 2,500 or 2,700mah cells to
    decrease in capacity so that it would be equal to the remaining
    capacity in Eneloops after the same number of days. The second
    would be the number of days for self discharge to reduce the
    capacities to 75% or 67% of maximum capacity. Sanyo may already
    have charts showing this for Eneloops, but I'd also like to see it
    for regular NiMH cells.
    ASAAR, Sep 9, 2006
  4. David Arnstein

    oceangoing Guest

    I've been looking for the Eneloops for quite a while. Who has them for sale
    oceangoing, Sep 9, 2006
  5. David Arnstein

    Steve Wolfe Guest

    Of the ones you mention, I have used only the Powerex 2700 AA
    I haven't really stressed them yet, but I got some Powerex 27000 AAs from
    Newegg recently along with a Powerex smart charger, and at a 240 mA charge,
    they take over 10 hours to charge for me. Some old, well-used (and abused)
    Panasonic 1600 mAh cells on the same charger are done in a measly 2 hours.

    Steve Wolfe, Sep 9, 2006
  6. David Arnstein

    Matt Clara Guest

    I think I use radio shack NiMH, have for years, I use them in an SB800 to
    shoot weddings, swap them for a fresh set half way through and there's no
    Matt Clara, Sep 9, 2006
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