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Thread: Battery life

  1. Default Battery life

    I've had my Costco hearing aids for about 3 months and use the Kirkland 312 battery. It seems that I get no more than 31/2 days out of a set. The cost is reasonable but it is a pain to change them that often. A friend of mine has a different hearing aid not from Costco and he gets at least 7 days out of a set which is great. He then schedules every Sunday to change his batteries so he doesn't get caught with them going dead. Is the 31/2 days normal and is there a better battery for longer life.

  2. #2

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    without seeing both audio-grams knowing how long your day is vs his or hour many hours a day you both stream no one not even kenny can answer your question

  3. Default

    All batteries are not created equal.
    The ZeniPower 312 Hearing Aid Batteries 1.4 V, 60 pack, available from Amazon are the best batteries I found for my Siemen Pures. I get 10 - 11 days. But my aids only talk to each other, so your milage etc etc.
    KayakerNC
    Eastern North Carolina

    My Audiogram

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  4. #4

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    My Alta2 Pro miniRITEs ran 8.5 days (14.5 hrs/day avg.) on their first set of Duracell 312 batteries. It's now been almost precisely eight days since I changed my batteries, averaging more like 16-17 hrs/day.

    Things to be aware of: I have relatively low gain for my mild loss, and I do not stream or use any accessories. Like KayakerNC's, my aids talk only to each other.

    I've got two more sets of Duracells left that my audiologist gave me, but I'm thinking about making my next replacement with the Kirkland Signature 312's I bought just so I can see how they compare.
    Last edited by The Latinist; 04-25-2015 at 02:37 PM.
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  5. #5

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    Try some different brands of batteries, but make sure you carefully track the life of each battery for each ear over at least thirty batteries per ear. If you do that, you should get a statistically valid comparison. Assuming you are comparing major brands of fresh batteries, my bet is the performance between different brands will be nearly identical. If you do see a difference in performance I am willing to bet it won't be more than a half a day, which based upon your current 3 1/2 days would be a 15% improvement. When you are down to a 3 - 4 day battery life, it is a PITA, but at least the cost of batteries at major chains like Costco or online makes it financially tolerable. We are all paying the price for removal of mercury from batteries and the manufacturers trying to keep HA's as small as possible by limiting battery size.

    One more thing... When tracking battery life you also need to track how long you wore your HA's each day so you can compare actual usage hours. I doubt anyone has gone to that level of detail in comparing batteries, but that is what it would take to get a valid comparison. If someone has, I'd really like to see the data. If not the comparison is very subjective.
    Last edited by MikeinOhio; 04-25-2015 at 03:33 PM.
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  6. #6
    Join Date
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    My experience has been that most batteries last pretty close to the same time when it comes to plain old hearing aid operation, but can vary a bit when it comes to streaming. The Costco Kirkland batteries don't support streaming nearly as well as the ZeniPower batteries I buy from eBay or Amazon. The Kirklands start dropping streaming much sooner than the ZeniPowers.
    Phonak Brio 2, ComPilot II, TVLink II from Costco

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  7. #7

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    Jay-man,

    Very interesting observation. That I can believe. There could be difference in the discharge curves between brands especially when the batteries are under load. I wouldn't expect the difference to be much, but from what I have read, streaming puts a pretty darn high current load on the batteries. That could cause the voltage output to drop more quickly resulting in premature loss of streaming.

    I recently read somewhere that Resound has come out with a model of their Linx2 that uses a size 13 battery. I assume that is because they were hearing lots of complaints from customers about battery life. With the number of Kirkland Signature 6's being sold by Costco I suspect the volume of complaints will increase dramatically forcing them to design a 6.1 with a 13 battery. The availabilty of streaming is forcing techie consumers to choose between wanting that convenience versus keeping their HA's really small with the inconvenience of a 1-2 day battery life. Frankly, Resound engineers should have seen this coming.
    Last edited by MikeinOhio; 04-25-2015 at 04:08 PM.
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    L....5dB....100% at 55dB
    R....5dB....100% at 60dB

  8. #8
    Join Date
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    I use powerone 312 batteries that I get from the VA. My ITC aids power level aids seeing I have a severe hearing loss. I also stream 4 -6 hrs a day, TV connect phone connect, music and audio books. I am getting 8 days out of my batteries. I wear my aids on average 15 hrs a day.
    I will say that I have had batteries that last longer than others. and I have results as low as 7 days and as long as 10 days. I do keep a log of my battery usage, and I change both batteries when I get the tone saying my battery is low. Normally my right aid battery goes out first and that is due to the fact that it is pushed much harder than my left.
    Chuck
    Navy Vet (Service Related hearing loss)
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    left 80% @ 90db

  9. #9

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    My aids use a size 13 battery. I prefer the larger size. I stream music frequently and get about 5 days per battery. I always have batteries with me. When I get the low battery alarm, I change the battery. No big deal.

    fos
    250 20/20
    500 25/25
    1000 40/45
    2000 50/55
    4000 60/70
    8000 75/90

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  10. #10
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    The reason why there are big discrepancies in the figures is that there are three or more different types of fitting. Conventional, streaming via local dongle and streaming direct. Assuming everything else being equal, the direct streamers will pull twice the current of the NFMI dongle aids which will in turn pull over a third more than a conventional setup with minimal binaural transfer.
    'He who is not courageous enough to take risks will accomplish nothing in life.'
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