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  1. #1
    Senior Member funrover's Avatar
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    Old light... New battery?

    I have an old Cygolight that is powered by 6 "D-cell" batteries........ I know the new Cygo light plugs into my light but is the watt. or amps to much? I am curious as it would be nice to have a back-up battery..etc!!

    TIA
    Aaron

  2. #2
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by funrover View Post
    I have an old Cygolight that is powered by 6 "D-cell" batteries........ I know the new Cygo light plugs into my light but is the watt. or amps to much? I am curious as it would be nice to have a back-up battery..etc!!

    TIA
    Aaron
    Depends on the voltage. Check with Cygo. Your system, if you are correct about the number of cells, is 7.2V for NiCd or NiMH.
    Stuart Black
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  3. #3
    Recumbent Evangelist
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    6 D cells is 9V. So, any 9V battery pack should work just fine. A lower voltage battery pack won't hurt the light, but it might not be as bright.
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  4. #4
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by jeff-o View Post
    6 D cells is 9V. So, any 9V battery pack should work just fine. A lower voltage battery pack won't hurt the light, but it might not be as bright.
    6 D cells in alkaline are 9V. Not in Nickel chemistry. 6 cells @ 1.2V per cell is 7.2V.

    Don't worry, I thought the same thing until I realized that there aren't any 9V systems that I could think of out there.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

  5. #5
    Recumbent Evangelist
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    Quote Originally Posted by cyccommute View Post
    6 D cells in alkaline are 9V. Not in Nickel chemistry. 6 cells @ 1.2V per cell is 7.2V.

    Don't worry, I thought the same thing until I realized that there aren't any 9V systems that I could think of out there.
    That's true, but was the original light designed for alkaline or rechargeables? In any case, the light will be brighter at 9V and still be operating at a safe voltage. Batteryspace.com has both 8.4V and 9.6V nimh packs, either of these would work fine (as would a 7.2V pack)
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  6. #6
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by jeff-o View Post
    That's true, but was the original light designed for alkaline or rechargeables? In any case, the light will be brighter at 9V and still be operating at a safe voltage. Batteryspace.com has both 8.4V and 9.6V nimh packs, either of these would work fine (as would a 7.2V pack)
    An 8.4V pack might work but the 9.6V would probably be too much. A 7.2V is pushing a 6V bulb 10%, I'm not sure you can push them 30% and still have any useful life for the battery.

    Most of the Cygo systems I've ever seen are rechargeable. All battery has a very nice 4500 mAh RC car battery for around $30.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

  7. #7
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    Quote Originally Posted by funrover View Post
    I have an old Cygolight that is powered by 6 "D-cell" batteries........ I know the new Cygo light plugs into my light but is the watt. or amps to much? I am curious as it would be nice to have a back-up battery..etc!!

    TIA
    Aaron
    I am not certain what you are asking? Do you have a current battery and plug? Does your current light have a jack? Regardless, I have two cygolites. One charger says 7.2 and the other says 6 volt. They both have the same plugs and both power "6 volt" systems.

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