Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Costco Batteries

  1. Default Costco Batteries

    I've been a longtime user of Rayovac Proline 312 @ $24 for 48 ($.50/ea). About a month ago I bought a pack of 48 Costco batteries to try @ $8.49 for 48 ($.18/ea.). I see no difference in performance and longevity whatsoever. Anyone else made a comparison of Costco batteries with major brands?

    https://www.costco.com/hearing-aid-batteries.html
    Siemens Motion 501 HS
    Freq. 250 500 1K 2K 3K 4K 6k 8k SRT %
    L 45 60 65 95 85 90 75 80 70 52
    R 45 60 55 55 75 70 80 85 60 44

  2. #2
    Join Date
    Sep 2015
    Location
    Washington State
    Posts
    105

    Default

    I haven't made any comparisons, but I just wanted to vent about the poor "wheel" dispenser on the Costco batteries. It's extremely hard and frustrating to turn the wheel to dispense a battery. Now I just take the wheel apart and put all the batteries in a ziplock bag. Don't these people do any usability testing?
    Rexton Trax 42 RIC (312) w/open domes (October, 2015)

    -----250-----500-----1K-----2K-----3K-----4K-----6K-----8K
    L-----30------35-----35-----30-----40-----65-----65-----55
    R-----25------35-----35-----30-----60-----60-----60-----55

    L: SRT=30dB, WRS 100% at 75dB
    R: SRT=45dB, WRS 100% at 75dB


    “Blindness separates us from things but deafness separates us from people.”
    ~ Helen Keller

  3. #3

    Default

    If you are happy with Costco batteries why would you care if other folks aren't?

  4. #4
    Join Date
    Feb 2015
    Location
    NW Indiana
    Posts
    2,464
    Blog Entries
    11

    Default

    There is a thread around that says they are Rayovac.

    I agree that the dispenser could be better. Pick up a pocket pill case and put them in it.
    Hidden Content
    KS6's w. Phone Clip +
    There is nothing either good or bad, but thinking makes it so. -- William Shakespeare





  5. #5

    Default

    I'm not sure if co-mingling the batteries is a good idea because there's a chance of shorting them out if another battery or two touch and short out the positive and negative ends of a battery. Most of the times it won't happen but there's always a chance it may because the majority of the surfaces of these batteries are metals.

    I also heard that Costco batteries used to be from Rayovac but then I also heard that Costco batteries are no longer OEM from Rayovac since they're switched to this new packaging, although nobody seems to know which new OEM supplies batteries to Costco now.

    I get about 5 days of battery life out of them in my OPNs, and I direct stream a lot.

    I do dislike the dispensing wheel of the current packaging, too. But if you have a hard time turning it one way, try turning it the other way. That seems to help a little from what I found.
    HA wearer since the 1990's > Rexton Insite+ CIC (2011-2016) > Oticon OPN RITE (2016)

    KHz 0.25...0.5...0.75...1.0...1.5...2.0...3.0...4.0... 6.0...8.0

    Left ...10...10....10.....30.....70....75....80....95.. ..90....80
    Right .25...30....40.....55.....75....85....90....90...1 00...100

  6. #6
    Join Date
    Feb 2015
    Location
    NW Indiana
    Posts
    2,464
    Blog Entries
    11

    Default

    Ohm's law states: The sum of the voltage drop around a closed circuit equals the applied voltage.

    The operative words are closed circuit and voltage.

    1. With the tabs on they are inert. There is no voltage to apply.

    2. Two batteries touching are still an open circuit. Consider a flash light to understand what makes a closed circuit.

    But, thanks for your contribution. Better luck next time.
    Hidden Content
    KS6's w. Phone Clip +
    There is nothing either good or bad, but thinking makes it so. -- William Shakespeare





  7. #7
    Join Date
    Dec 2009
    Location
    Wales, UK
    Posts
    3,456

    Default

    Quote Originally Posted by KenP View Post
    Ohm's law states: The sum of the voltage drop around a closed circuit equals the applied voltage.

    The operative words are closed circuit and voltage.

    1. With the tabs on they are inert. There is no voltage to apply.

    2. Two batteries touching are still an open circuit. Consider a flash light to understand what makes a closed circuit.

    But, thanks for your contribution. Better luck next time.
    You might want your chips with a little less salt.

    Even a 'tabbed' battery would have significant potential across the terminals due to the initial zinc decomposition, shorting is about the worst thing you can do to a cell. Keep them separate and cool, or better still in the packs they were supplied in.

    As for Rayovac, I'm not saying their product has slipped recently, but we now use Power One after 12 Years of being brand loyal. Take from that what you want.
    Last edited by Um bongo; 05-14-2017 at 08:48 AM.
    'He who is not courageous enough to take risks will accomplish nothing in life.'
    Link to my entry in the Hidden Content section.
    Hidden Content
    Hidden Content - Maintenance Stuff
    Hidden Content Hidden Content
    Hidden Content
    Hidden Content Hidden Content

  8. #8
    Join Date
    Sep 2015
    Location
    Washington State
    Posts
    105

    Default

    Quote Originally Posted by Um bongo View Post
    Even a 'tabbed' battery would have significant potential across the terminals due to the initial zinc decomposition, shorting is about the worst thing you can do to a cell. Keep them separate and cool, or better still in the packs they were supplied in.
    Thanks for the scientific tip. I'll try keeping them in the wheel and turning in the other direction.
    Rexton Trax 42 RIC (312) w/open domes (October, 2015)

    -----250-----500-----1K-----2K-----3K-----4K-----6K-----8K
    L-----30------35-----35-----30-----40-----65-----65-----55
    R-----25------35-----35-----30-----60-----60-----60-----55

    L: SRT=30dB, WRS 100% at 75dB
    R: SRT=45dB, WRS 100% at 75dB


    “Blindness separates us from things but deafness separates us from people.”
    ~ Helen Keller

  9. #9
    Join Date
    Feb 2015
    Location
    NW Indiana
    Posts
    2,464
    Blog Entries
    11

    Default

    I would agree that shorting is a no-no. Empirically, I have dumped them in a small case and not experienced a problem. I wonder just why the zinc would degrade in shield container? Without oxygen, its hard to make zinc oxide.

    Quote Originally Posted by Um bongo View Post
    You might want your chips with a little less salt.

    Even a 'tabbed' battery would have significant potential across the terminals due to the initial zinc decomposition, shorting is about the worst thing you can do to a cell. Keep them separate and cool, or better still in the packs they were supplied in.

    As for Rayovac, I'm not saying their product has slipped recently, but we now use Power One after 12 Years of being brand loyal. Take from that what you want.
    Hidden Content
    KS6's w. Phone Clip +
    There is nothing either good or bad, but thinking makes it so. -- William Shakespeare





  10. #10

    Default

    Maybe your gf, wife, mother or significant other could help with your dexterity problem?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •