AA Ni-MH Battery Voltage

Discussion in 'Digital Cameras' started by Guest, Sep 26, 2003.

  1. Guest

    Guest Guest

    I recently bought some 2200Mah Ni-MH AA batteries online and when I received
    checked their voltage. 3 were at 1.2-1.3V and 1 was at completely 0. Not
    good I thought!! Seemed to charge OK but noticed after 2 cycles it lost its
    charge faster than the other 3. So I promptly returned them.

    Just got the replacements and they are exactly the same, 3 at 1.2-1.3V and 1
    at 0.

    Anyone else had this before. Are they likely to be Ok after more charge
    cycles or would you just return em????? Perhaps a faulty batch?????

    Guest, Sep 26, 2003
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  2. Guest

    Mike Guest

    you got the ones you sent.
    Mike, Sep 26, 2003
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  3. Guest

    Guest Guest

    They were different sets (Know what you mean though!!! - Had that before!)
    They were sealed on cardboard backs so I'm pretty sure these are new
    replacements. Good idea about using a mark though!!
    Guest, Sep 26, 2003
  4. Not UNIROSS 2100's from Jessops by any chance.

    Same experience here - we made up 8 good batteries out of the three sets
    purchased and got a straight refund in the shop for the third. "Oh, but
    you've opened the packing and destroyed it...". "Well, you can't get the
    batteries out without tearing the packaging apart" we replied.

    Doesn't say a lot for UNIROSS quality control!

    David J Taylor, Sep 26, 2003
  5. Guest

    Steve B Guest

    I just bought 4 Uniross 2100mAh's plus smart charger from Amazon UK for
    £25.99 and they're perfect, all measured the same voltage as received and
    gave me 3hr50min of display on continuous usage in my QV3000 which only
    ever managed about 1hr30m with my 1300mAh batteries. The charger does
    actually appear to be an intelligent deltaV type amazingly and doesn't heat
    the batteries up.
    Steve B, Sep 26, 2003
  6. In a flurry of electrons David J Taylor spake thus:
    Interesting, my Dad just came round with his camera and a set of new
    Uniross batteries which won't work in the camera even when fully
    charged. I checked them against a set of Kodak branded rechargables.

    The voltages check out fine between 1.2 and 1.3 volts but when I
    checked to see how much current they would deliver it all became
    clear. The Kodaks would deliver a whopping 8 amps into a short circuit
    but the Uniross only made 800mA which instantly dropped off.

    Note to all, do not short a battery for more than 1 sec.
    Brian Fairchild, Sep 28, 2003
  7. Interesting, my Dad just came round with his camera and a set of new
    I've been measuring voltage into a 1.3 ohm load rather than open-circuit
    voltage. I will say that once the duff batteries had been eliminated, the
    others worked OK. However, now I've moved on to a Nikon 5700 the
    convenience of a single battery to change does outweigh the rather shorter
    battery life.....

    I've not tried measuring S/C current, though!

    David J Taylor, Sep 28, 2003
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