li battery for the F800gs - BMW F800 Riders Forum & Registry



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  1. #1
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    Mike K
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    Greetings folks. Mods on my bike continue and parts are arriving. I did search the forum to see if anybody had posted this before, but I did not find anything clear. I like the idea of the lithium battery for the motorcycle - for weight and size. I've watched numerous vids on this topic and know the benefits/drawbacks....

    Which one should I buy? Is there a better one with a better reputation or build quality? I like the idea of going as small as possible to create space for stuff. Comments on that?

    Li battery charger. A good one to own?

    Any help making this decision would be most appreciated - and a purchasing place in Canada (yes I see them on Fortnine) that has good prices would be helpful....and is there a specific lithium model number for the GS - or is it just specs that matter?

    Thanks.

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  3. #2
    Richard230's Avatar
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    After having a number of issues with batteries for my 2009 F650GS (800cc twin), last year I splurged on a deluxe lithium battery. I purchased this one from Batterystuff.com. The battery really puts out the juice and is staying so well charged while running my bike that placing it on a lithium battery charger after a ride only results in the charger running for a few minutes before the light turns green. Here is a link to the battery that I bought. Pretty darn expensive, but check out the specifications! https://www.batterystuff.com/batteri...x12-hd-rs.html
    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

  4. #3
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    Quote Originally Posted by Richard230 View Post
    Pretty darn expensive, but check out the specifications! https://www.batterystuff.com/batteri...x12-hd-rs.html
    Yer not joking about expensive. Not sure I can wing that, but the specs are great. Is it a full size replacement?

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  6. #4
    Richard230's Avatar
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    Quote Originally Posted by KRTW View Post
    Yer not joking about expensive. Not sure I can wing that, but the specs are great. Is it a full size replacement?
    My recollection is that the battery is a little smaller than stock and they provide spacers to fill out the battery box. Regarding the expense, the site has cheaper lithium batteries listed. Scorpion is their house brand but when I looked at it last year they were out of stock on that battery. Here are a selection of batteries that are said to fit the F800GS. You can check out the lithium battery dimensions and compare them with the lead acid versions: https://www.batterystuff.com/batteri...-gs-gt-r-adv-/
    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

  7. #5
    Runmyownlife's Avatar
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    Quote Originally Posted by KRTW View Post
    Yer not joking about expensive. Not sure I can wing that, but the specs are great. Is it a full size replacement?
    The replacement is smaller in all dimensions. I went up a size and it fit with a bit of room to spare. Gave me more cold cranking amps and reserve capacity.
    Concrete remains undefeated. 

  8. #6
    Randyjaco's Avatar
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    So what are the benefits of the Li battery other than weight?
    2010 F800ST 

  9. #7
    Runmyownlife's Avatar
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    Quote Originally Posted by Randyjaco View Post
    So what are the benefits of the Li battery other than weight?
    Folks drop many hundreds of dollars/euros to save a few pounds! That's a big advantage over lead acid.


    You typically get 80 to 100 more cold cranking amps. Slower self-discharge rate, shorter charging time and, according to the Internet, a longer useful life than lead acid. (My first lithium battery lasted 8 years, but that's a sample size of one.) There are cons too, particularly around the care and maintenance.
    Concrete remains undefeated. 

  10. #8
    Richard230's Avatar
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    I have a Ballistic lithium battery in my Royal Enfield that has been starting the bike's electric starter with authority for the past 9 years without needing any attention, other then placing it on a Deltran lithium battery charger for a few minutes after a ride. Two things lithium batteries don't like are cold weather and having a parasitic drain on them as they typically only have about 1/3 the electrical capacity of a similar lead acid battery, although they will provide almost like new performance until the voltage drops to a certain point and they shut down without much warning. So you need to keep them charged up if they are connected to a bike or accessories with a constant drain, such as an alarm system or something similar. On the other hand you can store them for a long time if they are not connected to an electrical drain.
    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

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