04-12-2019, 10:43 AM | #1 |
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New member, white M6 GC
Took the plunge, competition and executive packages, 2016 with 23k miles.
The bike is a 2018 K1600GTL, purchased brand new. Has 3K miles so far. What's a good battery charger / maintainer for the M6? |
04-12-2019, 11:29 AM | #2 |
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Congrats.
In regards to a battery maintainer...I got the BMW one seen below...but you can find the same design that offers the same options usually for less money (look for CTEK brand). I had enough reward money that knocked off the price in my scenario.
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04-12-2019, 12:17 PM | #4 |
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Thanks for the quick replies and pictures.
That CTEK 5.0 was the one I was thinking about. Being new to the M6 I don't even know if the battery is AGM or not, I believe it is. When I looked in the trunk, the specs are covered with all the positive terminal connections, and on the side I could only see a BMW logo. |
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04-12-2019, 12:24 PM | #5 | |
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04-12-2019, 12:31 PM | #6 |
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I do have a batteryMinder 2012 that I use for my bike and my truck and it works perfectly, fully automated. But it is not made for AGM batteries. Is the M6 battery AGM? I wonder if it will cause any problems if I connect the batteryMinder to the M6's jump start posts under the hood.
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04-12-2019, 01:59 PM | #7 |
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I use this Battery Tender model. Works perfect with no issues. The battery is AGM.
Battery Tender (022-0186G-DL-WH) 12V 5 Amp Battery Charger https://www.amazon.com/dp/B00EDFPN1O..._KYnSCb3AQJ9KA But looks like they also have a 4 amp version that is switchable between AGM/Lithium Battery Tender 022-0209-DL-WH 4A Selectable Charger is an AGM/Standard or GEL/Lithium Iron Switchable, 12v or 6v Switchable at 4a, Includes Rings & Clips. It Will Never Over Charge Your Battery https://www.amazon.com/dp/B01K87YZ3C..._n.nSCbHMA5JY7 I’ve been using the Battery Tender brand for years on multiple vehicles/bikes with no complaints. |
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04-12-2019, 04:06 PM | #8 |
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Maybe a totally silly and out of line question, but why would one need a battery charger? I understand sometimes you might experience excessive battery discharge if the car is not driven for months - is this the scenario here? Or are you guys experiencing battery discharge under normal conditions and with reasonably regular use?
Unfortunately I can’t find time to drive my M6 GC usually outside of weekends, and sometimes the car may end up being on its own for 3-4 weeks, but even in those situations I’ve never experienced excessive discharge, as a matter of fact, even when driving after longer time without action, the stop-start system usually activates after just a couple of min of driving (indication of normal battery charge level). The only situation I have experienced discharge is when using the sound system (non-factory with reasonably high output amps) for an extended period (for instance when detailing) without engine running, but that’s self inflicted (*stupidity)... So, is there another reason to keep the battery at max charge? Longevity? Keen to hear your thoughts. |
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04-12-2019, 04:41 PM | #10 | |||
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So keeping a charger connected to the jump start terminals in the engine bay...helps to prevent damage from multiple deep or shallow discharge. There are also a lot of electronics that can be awakened in certain circumstances. For instance, if you have comfort access...anytime a remote fob is within range...it will wake up some of the modules on the communication bus...the CA antennas are receiving info from the remote fob. So if your wife (or you) have the remote on their person and walks past the car parked in the garage...it wakes up and uses power from the battery. And if you don't lock your car because it's in the garage...if anyone in the house opens a door or the trunk...again, the car wakes up and remains "online" for at least 16 minutes (that's what it used to be) if no other calls are made on that communication bus...then the car goes back to sleep. Then, if you live in a part of the world that has extreme heat and/or extreme cold...this also can be hard on a battery when parked or being driven and restarted.
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04-12-2019, 11:32 PM | #11 |
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Excellent explanations above. I'd add that keeping a battery charger connected is good for the battery because they also desulfate them. I have been using batteryMinder 2012 on my other vehicles and I never had to buy a new battery.
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04-18-2019, 02:41 AM | #15 | |
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Thats great advice, I would have bought that if I’d known but bought 2 x the CTEK ons (https://www.ctek.com/products/vehicle/mxs-5-0) for my GC GC in the UK as well as for my wife’s 125 convert in Madrid as we sometimes don’t go there for months at a time. It works great but I see you point out in the manual about charging points. I’ve been attaching mine directly to the battery points in the front but notice in the Bmw garage they often attach to other easier points to get at under the hood? What do you use? |
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04-18-2019, 03:25 PM | #16 | |
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The pic below is of an M6 engine bay...but the terminals in my regular 650ix are in the same locations...as well as being in the general vicinity on the 6 cyl models, too:
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04-18-2019, 04:20 PM | #17 | |
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04-22-2019, 02:21 PM | #20 | |
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Cliff notes: the cig lighters de-energize after a few minutes...thus are useless as connecting points for charging the car's battery. Plus many of the battery maintainers (BMW & CTEK brands) supply hardware that allows for permanent attachments to the jump start terminals...and the power cord has two sections...the short section of the power cord can be secured in the engine bay for quick connection to the charger/maintainer/tender. And you also want the power source to be recognized by the IBS (intelligent battery sensor) so that any change in the status of the battery is not perceived as an issue...thus causing incorrect charging. {in the lower right of the pic below...you can see the supplied hardware that allows for permanent attachment...the left side shows the quick connect/disconnect alligator clips}
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04-22-2019, 03:33 PM | #21 |
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Click on the paper clip but first resize to 2400 x1500 - see below and i use the IOS app IMAGE SIZE....its a great app...
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