R1200RS + R1250RS Forum
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Mon Jan 31, 2022 3:37 pm
Zitat von Saw im Beitrag #28 Even with a Canbus compatible charger? Seems strange BMW would advise against this when they sell Canbus compatible chargers.
Lee
2022 R1250RS Iowa, USA |
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Zitat von Saw im Beitrag #28 Is your charger set to Canbus and do you follow the proper procedure when you first plug it in.
Lee
2022 R1250RS Iowa, USA |
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Zitat von Esquared im Beitrag #30 Will the bike be parked up unused for significant periods? The word significant will vary on circumstances. I am currently following some threads on UKGSer where owners of 2021 R1250GS in their first winter are finding the tracker fitted to their bikes can drain the battery after 2 weeks. Not everyone with a tracker but the theory is that the bikes are parked in places with a weak cell phone signal so the tracker is not going into passive mode but remaining in alert mode. If you do not have a tracker/alarm fitted then your battery should stay fully charged for a month or two. I have 2x 2016 bikes, both BMW. I have an Optimate 4 with canbus mode. I use canbus mode on the occasional time my RS needs a top up. The RS has had 2 decent rides in January which has been enough to keep the battery topped up. I am no longer doing short winter commutes which drained the battery. The battery on this 2016 RS is the original battery so is busting the myth that BMW make universally garbage batteries. I put my S1000XR onto charge last month, using the Optimate 4 but direct to the battery (it is easy to access under the seat). The charger was only connected for one overnight. A month later, the battery was still showing 12.5V and I took it out for a ride last Saturday in winter sunshine at 10C (50F). I dount the XR will need another charge before it gets more regular use in my week off in March. See where I am going? My advice is to only use a charger if you really need to. If you leave the bike for long periods and it has a tracker fitted then you might want to have the charger connected all of the time. In this case, go direct to the battery. You will bypass any of the often reported malarkey of the canbus getting sulky and switching off the accessory socket after a while. Some owners only finding out after the battery has deep discharged and will not charge up in the spring. If you are more like me, and only need to top up the battery if you have been commuting in winter with lights on and don't cover enough miles to fully charge the battery then use the accessory socket as it is convenient and will stay connected at least until the battery is fully charged, plus you will be checking on it after 24 hours or so and removing the charger once the battery is full.
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Zitat von L2RKE im Beitrag #33 yes, this will bypass the canbus - the red post is just a short, heavy duty lead to the positive terminal on the battery allowing easy connection of accessories and a jump start cable.
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I still have an original Opitmate 3 which, being 'non-can-bus' had to be hard wired onto my bike batteries, currently my 2005 R1200ST. |
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Zitat von Esquared im Beitrag #30 The pigtail on the battery is just plain simpler to deal with.
I’m a Notary Public. RESPECT MY AUTHORITY!
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After reading through the latest installments in this thread, I'm inclined to agree with you. If the Canbus is not a "set it and forget it" way to keep the battery topped off, and it tends to get "sulky," then what is the overriding reason to use it for this task instead of a pigtail/Battery Tender+ (or similar)? |
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Zitat von Esquared im Beitrag #38 I think the CANbus version is for people who are afraid to add something to the battery…or even touch the electrical system. My pigtail was installed by BMW with the bike because they knew people would need it, and it was like $5 off their bottom line.
I’m a Notary Public. RESPECT MY AUTHORITY!
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Hi |
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Sound advice. |
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Last winter, I put the bike on a Battery Tender Jr using the pigtail on the bike. I needed another battery charger, so I got an Optimate 4 and used the DIN plug this winter. The last time I rode was December.
2020 R1250RS
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I don't have a BMW or Optimate charger, so shortly after acquiring my R1200RS, I disconnected the the Canbus from the external socket and direct wired from the battery (with an inline fuse) to the socket. This enables me to use a number of chargers I have accumulated over the years (all voltage controlled, current limited). To my mind, this overcomes all the possible problems/limitations with Canbus. |
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Again, these fancy pants charging systems are designed for people who just want to plug something in and call it a day. The problem is that the more complicated the setup, the more that can go wrong. It’s like how the Navigator VI does and doesn’t work right with the cradle because of how it’s coded. Not turning on when it should and turning off when it shouldn’t…all in how it reads a signal from the CANbus. I’m a Notary Public. RESPECT MY AUTHORITY! |
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This thread looks like the closest thing I'm going to find to answer my question. The trouble is, the answers are all over the place. I'll have owned my 2018 R1200RS for 5 years next month. The bike is just short of 27,000 miles. I still have the original battery and it's always on a trickle charger when the bike is in the garage. I ride pretty close to year round and for the last year I've had the additional winter time load on the electrical system of a heated jacket and gloves. Love those! I'm starting to think about replacing the battery when I do my annual maintenance. I've had car batteries die on me with absolutely no advance warning at all and I'd rather not be stranded on the bike. Thoughts? Seems like 5 years is the longest I'm seeing without replacement. I'm also curious about the post staying battery fault codes were read during annual maintenance. Is that something you'd see when the GS-911 is plugged in or elsewhere? |
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