Battery Cutoff Switch
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Stage IV
Joined: Jan 2023
Posts: 4
Likes: 0
From: Arizona
Battery Cutoff Switch
Hey ya'll. I am sure there are others in my situation and just curious if its doable. I have a 2016 Sportster 883 that is soon to come out of the shop. I live in an Apt complex and they won't let me do anything to hook up a tender to the battery (even though a junction box exists within 3 feet to the bike) I was thinking I could just equip a battery cutoff switch and save the battery when I cannot ride. Can a bike with a computer like mine be ok doing that? The only other solution i can think of would be to remove the battery every week or so and hook it up inside. Thoughts? If there is an easier way and i am missing it, let me know.
Last edited by Ncollins1985; Jan 11, 2023 at 01:22 AM.
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,258
Likes: 4,947
From: England
Pull the maxi fuse. No extra addition to go wrong and not disturbing the battery terminals.
If your bike is equipped with the security device you turn on the ignition to disarm it first before pulling the fuse.
If your bike is equipped with the security device you turn on the ignition to disarm it first before pulling the fuse.
Last edited by Andy from Sandy; Jan 11, 2023 at 03:29 AM.
disarming the alarm and pulling the maxi alarm like Andy from Sandy said is the correct answer.
are you experiencing a parasitic drain? or are you located in a cold climate? cold weather will drain a battery whether it's connected to anything or not. when i bought my last AGM battery, the salesperson said any temp below 50degF can cause the battery's capacity to be reduced, obviously the colder you get the more reduced the battery's capacity will be.
are you experiencing a parasitic drain? or are you located in a cold climate? cold weather will drain a battery whether it's connected to anything or not. when i bought my last AGM battery, the salesperson said any temp below 50degF can cause the battery's capacity to be reduced, obviously the colder you get the more reduced the battery's capacity will be.
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,258
Likes: 4,947
From: England
The OP has a 2016 bike that has a BCM, ECM, left and right hand control switch modules and speedometer that are always powered so yes the bike puts a constant drain on the battery.
Last edited by Andy from Sandy; Jan 11, 2023 at 10:49 AM.
Thread Starter
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Stage IV
Joined: Jan 2023
Posts: 4
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From: Arizona
So pulling the fuse wont cause any issues other than resetting to clock on the speedo. Would it create any issues to the computers or modules losing power like that? I live in Arizona so its not the cold, its just the sitting there not being ridden on a daily basis like I used to.
Thanks all!
Thanks all!
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,258
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From: England
I only have experience on a 2008 that has the ECM. I pulled the power as I was converting it to a trike. After 6 months I switched it back on without any problems at all.
I don't envisage a problem with the BCM either not being powered for days at a time but direct experience only a few hours when working on the bike.
I don't envisage a problem with the BCM either not being powered for days at a time but direct experience only a few hours when working on the bike.
Last edited by Andy from Sandy; Jan 11, 2023 at 11:06 AM.
Seasoned HDF Member
Joined: May 2012
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From: Carlsbad, CA
Pulling the maxi fuse won’t hurt anything. But, if you can ride once a week. You should be ok without doing anything.
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