Rechargable AA's vs. the standard CR2's: a voltage problem???

Discussion in 'Photography' started by Dragul, Jul 27, 2003.

  1. Dragul

    Dragul Guest

    Hello,

    I have an MZ-50, and I'm hoping to get the optional battery pack so
    that I can use AA cells rather than the CR2 lithium ion cells that are
    just too expensive to go through so quickly by doing lots of long
    exposures.

    Now my question concerns the difference in voltage between standard
    (non-rechargable) AA batteries (at 1.5V) and NiMH rechargables (at
    1.2V). The camera now has two 3V CR2 batteries, so 6V in total. Using
    four NiMH's it would ostensibly only have 4.8V available (4 x 1.2)...
    this seems to be a pretty significant drop in available voltage!

    Is this likely to effect camera function/performance?

    Would NiCd batteries be a better option than NiMH for some reason?

    OK, Thank-you in advance for any advice you can offer me, please don't
    try to send emails privately to my address at this stage, as I've been
    having trouble accessing my inbox...

    Thanks again!


    Dragul.
     
    Dragul, Jul 27, 2003
    #1
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  2. Why not try 5 NiMH's, makes exactly 6V, only where to put 5th cell
    Lothar
     
    Lothar Ehling, Jul 27, 2003
    #2
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  3. Dragul

    Frederick Guest


    I too don't really understand the voltage issues of batteries. However
    I have a Vivitar 283 Flash unit that needs 6 volts of power. The 6
    volts comes in the form of 4 AA batteries. I use 4 NiMH batteries made
    by Quest. I purchased them at Wal-Mart for $10.00 a pack. There
    doesn't seem to be any power drop off using these. In fact I find my
    flash unit recycles faster with the NiMH batteries as it does with the
    standard AA batteries.

    Now I can't say if this will work in place of Lithium, but I do know
    that the .3 volt difference will not make a different.
     
    Frederick, Jul 28, 2003
    #3
  4. Dragul

    Bob Sull Guest

    If the CR2 was a Lithium ion battery this would not be a problem since
    the Lithium Ion battery is rechargeable. Plain Lithium batteries are not.
    It will deplete the battery pack quicker but then you just recharge it.
    Or carry a spare pack.
    No. Not for any reason. NiMH cells don't have any of the memory
    problems that NiCd does. The capacity of AA NiMH cells is now over
    2000mAH, somewhere between 2100 and 2200 mAH.
    Bob
     
    Bob Sull, Jul 29, 2003
    #4
  5. Dragul

    Dragul Guest

    Thank-you for your replies, Bob, Lothar, and Frederick...

    Just to clarify one thing: The camera has CR2 Lithium batteries... not
    lithium ion as I said (I have to admit I didn't know there was a
    difference)

    Even if rechargable CR2 cells are an option, I think I'd rather the
    battery pack w/ 4 AAs... I think that it will add some much needed
    weight and dimension to this tiny SLR!

    Lothar's idea about using 5 NiMHs is definately an interesting one!
    Although I too am not sure of where to put the 5th one.

    Anyway, thanks again, and please keep the suggestions coming,


    Dragul.
     
    Dragul, Aug 1, 2003
    #5
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