Battery Maintenance for 2013 F800GT - BMW F800 Riders Forum & Registry



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  1. #1
    Points: 98, Level: 1

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    Calgary, Alberta
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    Hi All. I'm in Calgary so my new to me GT is still sitting in my garage since it was first delivered in December. It will be a couple of months before I can have my first ride. I bought an Optimate 4 Can-Bus charger. Is this the correct charger for the GT? Can I charge the battery using the onboard socket? The manual is vague on this saying to use a suitable charger. Thanks in advance.

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  3. #2
    Points: 8,200, Level: 63

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    If it is can bus compatible it must work with the BMW system (I guess the instructions should say?). Check the bike manual for the correct socket to use on the bike too.

    UDepending on the temperature your garage gets down to, the battery should last a reasonable amount of time (depending on if you have a factory fitted alarm, or not).
    BMW F800ST, 2010, Black, Fuzeblock, Sat Nav, BMW Tank Bag, Givi Touring Screen, 

  4. #3
    WildWilly's Avatar
    Points: 197,142, Level: 100

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    Bill
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    SE Iowa
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    Motorcycle
    '13 F800GT
    I wired my Battery Tender directly to the battery, with an inline fuse.
    2013 F800GT Graphite Metallic
    Not a 2nd childhood, still in the 1st 

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  7. #4
    Points: 98, Level: 1

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    Ok. The weathers a bit warmer today and I was able to have a proper look at the bike. I found the correct socket on the right hand side of the bike and plugged in the Optimate 4 Can-Bus charger. The battery is now charging correctly. The Rider’s manual was a little vague. Thanks for the replies.

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  9. #5
    Points: 6,017, Level: 53

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    John Carpino
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    Unionville, CT
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    Motorcycle
    '10 F650GS (Twin)
    I use a Yuasa charger connected directly to the battery with pigtails. I keep it on all the time when not riding. 7 year old battery and fires up every time. I ride with heated gear and additional lights too.

  10. #6
    Sundog52's Avatar
    Points: 5,010, Level: 48

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    Geoff
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    Birmingham in Alabama
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    Motorcycle
    '13 F800 GT
    Motorcycle
    '94 R1100RS
    Quote Originally Posted by WildWilly View Post
    I wired my Battery Tender directly to the battery, with an inline fuse.
    +1
    Sundog 

  11. #7
    pigmy's Avatar
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    Carl
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    Motorcycle
    '18 F800 GT
    Motorcycle
    '98 VFR800
    Motorcycle
    '06 F800ST
    Motorcycle
    '06 F800ST
    I have just bought a Noco Genius 2. Have yet to connect to my GT but have used it on my old VFR and it works well.

    https://no.co/genius2

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