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  1. #1
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    Exclamation Rayovac Batteries Don't Work In Blackburn Lights

    I bought some Rayovac brand AA alkaline batteries at Home Depot, primarily to use in a Blackburn 4 AA headlight. They don't work. I called Rayovac and the Customer Service Representative told me they started making the positive "nub" a little shorter and they no longer work on some devices. He suggested I adjust the contacts on the device if possible to account for the difference.

    I eyeballed the batteries next to a Sanyo Enoloop AA. There is no visible difference in height.

    The batteries are labeled as being good until Dec 2018.

    The batteries were making full contact when I had them in the Blackburn light. I say Rayovac is full of baloney. There is something seriously wrong with their batteries.

  2. #2
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    Why not just return them?

  3. #3
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    Do they work normally in other devices?

  4. #4
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    ... a blob of silver (acid free) solder?

  5. #5
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    Unfamiliar with the light, but can't you stretch the spring or bend the metal out moew, that makes contact with the battery?
    - Ed

    2012 Trek Madone 6.7 SSL
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  6. #6
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    Quote Originally Posted by looigi View Post
    Do they work normally in other devices?
    Yeah, that. And does the light work with other batteries? You might just have one bad cell.

    But another question: why are you using throwaway alkalines, when you have rechargeables (and presumably a charger). Single-use batteries are a bad choice for any light, but are especially a problem with LED lights. Since the brightness of the LED drops off substantially with a small drop in voltage, using throwaways means you will either use a lot of batteries (tossing them when they still have half their energy left) or you'll be running your lights at less than full performance for much of the time. NiMH rechargeables, swapped often, are so much better, more economical, more environmentally-friendly, etc.

  7. #7
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    Quote Originally Posted by JCavilia View Post
    ... NiMH rechargeables, swapped often, are so much better, more economical, more environmentally-friendly, etc.
    Perhaps, but I still prefer to use disposables for lights I use infrequently.

  8. #8
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    Quote Originally Posted by looigi View Post
    Perhaps, but I still prefer to use disposables for lights I use infrequently.
    Why? Their only advantage is (was) holding a charge on the shelf better than the first-generation NiMH's, but the newer types (like Eneloop) don't have that self-discharge issue. The rechargeables cost more up front, but you make that back in three or four charging cycles. And you don't have to choose between throwing out a half-used battery and running a dim light.

    I keep a few disposables as spares in case of a lengthy power outage, but otherwise all the battery devices I own use rechargeables.

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