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  1. #1
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    Default Replace the battery in Sena 20S

    Sena will tell you that once the battery goes dead, you're out of luck unless the unit is still under warranty, which typically it's not.

    I just replaced the battery in each of my Sena 20S with this https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    following the instructions in this video; https://youtu.be/vzzTNr96BWA

    The hardest part is finding a T-8 bit to remove and replace the 5 tiny screws.
    2014 RTL Platinum


  2. #2
    Very Active Member RICZ's Avatar
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    Thanks for the links and this valuable info.
    Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.
    2017 F3 Limited , Red, Black & Chrome

  3. #3
    Very Active Member Bensonoid's Avatar
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    Mine are about 4 yrs old and still working well. How long before you needed to replace yours?
    2015 RTS Special Series
    Russell Day Long seat
    F4 Customs windshield
    Sena 20s

  4. #4
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    Quote Originally Posted by Bensonoid View Post
    Mine are about 4 yrs old and still working well. How long before you needed to replace yours?
    Mine are about 5 years old

    The old ones were swollen.
    16207608597838726973248624980872.jpg
    Last edited by Peter Aawen; 05-11-2021 at 05:33 PM. Reason: Fixed attachment display
    2014 RTL Platinum


  5. #5
    Very Active Member Bensonoid's Avatar
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    If I get through this season I guess I better figure on replacing them over the winter. Thanks for the info.
    2015 RTS Special Series
    Russell Day Long seat
    F4 Customs windshield
    Sena 20s

  6. #6
    SpyderLovers Sponsor Motorcycledave's Avatar
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    Quote Originally Posted by UtahPete View Post
    Sena will tell you that once the battery goes dead, you're out of luck unless the unit is still under warranty, which typically it's not.

    I just replaced the battery in each of my Sena 20S with this https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    following the instructions in this video; https://youtu.be/vzzTNr96BWA

    The hardest part is finding a T-8 bit to remove and replace the 5 tiny screws.
    Good information but a little out dated Me and Finless Bob have been replacing the batteries in ALL SENA units for years

  7. #7
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    Quote Originally Posted by Motorcycledave View Post
    Good information but a little out dated Me and Finless Bob have been replacing the batteries in ALL SENA units for years
    Are you saying you provide that service? That's good for folks to know.
    2014 RTL Platinum


  8. #8
    SpyderLovers Sponsor Motorcycledave's Avatar
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    Quote Originally Posted by UtahPete View Post
    Are you saying you provide that service? That's good for folks to know.
    We have done it for years from the SMH5 on up the earlier ones are not plug and play you have to solder them in.
    you can find the batteries on ebay .

  9. #9
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    Quote Originally Posted by Motorcycledave View Post
    We have done it for years from the SMH5 on up the earlier ones are not plug and play you have to solder them in.
    you can find the batteries on ebay .
    What do you charge?
    2014 RTL Platinum


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