Lithium Ion rechargeable batteries and Olympus C-220

Discussion in 'Olympus' started by Grytpype-Thynne, May 29, 2004.

  1. Hi,

    Has anyone used Lithium Ion rechargeable batteries in the Olympus C-220?
    I have been reading that Olympus have said there can be problems using
    any other than their batteries (probably just to make sure they sell more
    batteries), I have only just got the camera and I don't want to cause
    myself any problems.

    Whilst on the subject of batteries does anyone know what the polarity is
    of the DC input socket on this camera as I was thinking of making up a
    power pack of pairs of NiMh cells in parallel.

    Thanks

    Gerald
     
    Grytpype-Thynne, May 29, 2004
    #1
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  2. Grytpype-Thynne

    Ken Weitzel Guest


    Hi Gerald...

    I would strongly urge you to discard the idea of
    paralleling NiMh's. A very bad idea, for many
    reasons.

    Take care.

    Ken
     
    Ken Weitzel, May 30, 2004
    #2
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  3. Grytpype-Thynne

    Lionel Guest

    <nods> Most particularly, there is a serious risk of melting the
    batteries.
     
    Lionel, May 30, 2004
    #3
  4. Hi Ken,

    I'm not saying you are wrong but I have been connecting cells in parallel
    for years now (I'm 57) with no problems and there seem to be plenty of
    adverts for battery packs with cells in parallel. Any way I probably
    will get a couple of high capacity D cells in series to power the camera
    in an emergency, so as I asked does anyone know the polarity of the DC
    input socket?
    Gerald
     
    Grytpype-Thynne, May 30, 2004
    #4
  5. Grytpype-Thynne

    Lionel Guest

    Kibo informs me that Grytpype-Thynne
    How sure are you that you mean 'parallel', & not 'series'? Connecting
    them in series is fine, & it's the standard way of making up battery
    packs.

    Series looks (electrically) like this:
    +[#####|-^+[#####|-^+[#####|-

    Parallel looks like this:

    +[#####|-
    ( )
    +[#####|-
    ( )
    +[#####|-

    Connecting them in parallel can be done safely if you know what you're
    doing - you can't just wire them terminal to terminal, you need to
    include load-sharing resistors at the very least.
    It should be marked on the socket itself, or on the nameplate of the
    unit. Look for a little circular symbol with a heavy dot in the middle.
    The circle should have a + or - marked on it.
     
    Lionel, May 30, 2004
    #5
  6. Hi,

    I was a radio and TV engineer until I became medically retired and my
    grandfather taught me about electronics when I was 6 so that's 51 years
    of experience, I've worked from large valves that were more like lights
    through to surface mount.

    2 cells in series to make 2.4 or 3 volts depending on the cell then
    connect each pair in parallel top of first pair to the top of second pair
    then bottom of first pair to bottom of second pair, with load sharing
    resistors in place.
     
    Grytpype-Thynne, May 30, 2004
    #6
  7. Grytpype-Thynne

    Lionel Guest

    Kibo informs me that Grytpype-Thynne
    Well, I don't have a lot of experience with valves, but I've done
    everything else. ;)
    No worries then. You hadn't mentioned load-sharing resistors previously.
     
    Lionel, May 31, 2004
    #7
  8. Grytpype-Thynne

    Ken Weitzel Guest

    Hi Gerald...

    Hey, I'm an old retired and stroke damaged P Eng (electrical)
    which counts for nothing at all; but I *am* older than you
    are so I win :) (64 today - don't tell the girls :)

    First, Olympus cameras have the pin positive. No
    protection at all; no crowbar, no diodes, you're on
    your own....

    The reason that we're concerned about putting them
    in parallel is the incredibly low internal impedance
    of NiMh's. They'll dump fantastic amounts of current
    instantaneously). So, please give me the benefit of
    the doubt and be careful!

    And if you're blessed enough to have youngsters in
    your life, as I do with grand kids, please keep NiMh's
    away from them.

    Couple of years ago, was outside taking pictures. Had
    a set in my camera; and a spare set in my hand.
    Little grand daughter came out, and excitedly told me
    that we could ride our bikes to the ice cream store
    if we were sure to hold hands crossing (major street)

    I foolishly put the spare set in my totally empty
    relatively tight blue jeans pocket and off we went.
    Got as far as the ice cream stand, and somehow one of
    them shorted. Hot - and too tight to pull away from my
    leg. Couldn't/wouldn't take them off in front of kids.
    Got hot enough to melt the plastic off the battery,
    and to this day I have the scar on my leg.

    Now I carry spares only in a proper container. :)

    Sorry for the bit of a lecture, just please be
    cautious.

    Take care.

    Ken
     
    Ken Weitzel, May 31, 2004
    #8
  9. That's probably because I don't really think about them, and just use
    them.

    When my grandad started teaching me everything had brass terminals and
    you used square wire to connect them, the circuits were on blue prints
    and you fixed everything to the blueprint over the actual drawing and ran
    the wire in straight lines with 90 degree corners. I still have a
    blueprint somewhere for a 2 valve radio and as I said about the valves
    being bright if you couldn't receive anything you could read by the light
    from them.
     
    Grytpype-Thynne, May 31, 2004
    #9
  10. Grytpype-Thynne

    Vic Dura Guest

    Speaking of Li-Ion batteries, does anyone know if AA rechargeable
    Li-Ion (and a recharger) are available anywhere?
     
    Vic Dura, May 31, 2004
    #10
  11. Grytpype-Thynne

    stewy Guest

    How much better are Lithium Ion than NIMH?

    My Fuji S7000 seems very heavy on NiMH.
     
    stewy, Jun 5, 2004
    #11
  12. Better in what respect? In terms of physical size and weight, LiIon and
    NiMH have about the same energy for a given size (volume), but the LiIon
    battery will weigh much less for the same energy.

    LiIon also has low self-discharge, so it retains nearly full power for
    many months after charging. NiMH cells discharge about 1% per day, so
    if it's been more than a few weeks since you charged them it's a good
    idea to "top up" the charge before use if you need maximum output.

    LiIon cells slowly degrade with time whether you use them or not. I've
    read that their useful lifetime is 2 years, and a couple hundred charge
    cycles. NiMH are cheaper to buy in the first place and will provide
    more charge cycles though their life.

    Dave
     
    Dave Martindale, Jun 5, 2004
    #12
  13. Grytpype-Thynne

    stewy Guest

    The NiMH batteries lost power quickly and I was only getting 50-100 pix to
    one set, however I've started using the complete discharge feature in the
    S7000 and this has significantly improved performance.
     
    stewy, Jun 9, 2004
    #13
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