 Battery Jump Through Aux Power Plug?
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Joined: Oct 2007
Posts: 61
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OP
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Joined: Oct 2007
Posts: 61 |
Did a stupid thing last evening and managed to walk away from the bike with the key on. An hour or so later the battery was drained and couldn't start the bike. While I waited for a buddy to come with his car and jumper cables I removed the battery covers, got frustrated by the fact that the battery bracket is held tight by a Torx screw (which I didn't have) and was generally unhappy. My buddy came (with Torx) and got the battery jumped right away.
So now I'll carry jumper cables with me, of course.
But it occurred to me that since I have the aux power outlet, could I jump it by running jumper cables to the power plug? At least that way if I get stupid again I won't have to disassemble the entire battery compartment.
Thanks!
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 310
Adjunct
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Adjunct
Joined: Jan 2005
Posts: 310 |
I think the Aux Power Plug only has a 5a fuse. I would think that would be too light of an amp for a jump. I do use my Power Plug with my trickle charger.
---Bob
04 Speedmaster
07 Ulysses
16 Sportster Roadster
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Re: Battery Jump Through Aux Power Plug?
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Joined: Feb 2007
Posts: 23,217 Likes: 61
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,217 Likes: 61 |
Not good to jump your bike off of a car. The car puts out too much power and can damage the charging system, maybe the ignition too since our ignition seems to be fragile.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2006
Posts: 7,693 Likes: 22
Monkey Butt
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Monkey Butt
Joined: Jan 2006
Posts: 7,693 Likes: 22 |
I didn't think a non-running 12 volt car battery could hurt it. Won't it just pull what it needs to start? I would surely not have the car running and would pull the cables quickly.
I try to aggravate one person a day. Today may be your day.
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Re: Battery Jump Through Aux Power Plug?
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Joined: Feb 2007
Posts: 23,217 Likes: 61
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,217 Likes: 61 |
The CCA are still too high for the bike but probably better than with the car running.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Battery Jump Through Aux Power Plug?
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Joined: Aug 2007
Posts: 18
Complete Newb
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Complete Newb
Joined: Aug 2007
Posts: 18 |
I just jumped my bike. Doing some web research first, consensus seemed to be to do so without the car engine running. That worked fine.
So now I'm wondering if there are lighter sets of jumpers available. Martin, are you now carrying standard auto jumper cables with you? Or did you find something smaller and lighter?
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Re: Battery Jump Through Aux Power Plug?
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Joined: Oct 2007
Posts: 61
Member
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OP
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Joined: Oct 2007
Posts: 61 |
Quote:
I. Martin, are you now carrying standard auto jumper cables with you? Or did you find something smaller and lighter?
Found these: http://www.amazon.com/JUMPER-CABLES-YUAS...5228&sr=8-1
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 5,172
Saddle Sore
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Saddle Sore
Joined: Jan 2005
Posts: 5,172 |
Accessory socket is on #3 fuse - 10 amp. Connector wires are about 14 guage, if that. Current required to start the bike would probably blow the fuse and fry those wires. I run my Battery Tender through that socket. That's a lot less amperage than a jump-start. No sir, wouldn't do it... 
More flags
More fun!
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 12,164 Likes: 1
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,164 Likes: 1 |
Quote:
Not good to jump your bike off of a car. The car puts out too much power and can damage the charging system, maybe the ignition too since our ignition seems to be fragile.
I have had to do it a couple times. No problems.
Soren
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 12,164 Likes: 1
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,164 Likes: 1 |
Quote:
So now I'll carry jumper cables with me, of course.
But it occurred to me that since I have the aux power outlet, could I jump it by running jumper cables to the power plug? At least that way if I get stupid again I won't have to disassemble the entire battery compartment.
You might want to check into something like this. It is made for that kind of jump starting.
Soren
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 2,362
Oil Expert
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Oil Expert
Joined: Jan 2005
Posts: 2,362 |
Quote:
Not good to jump your bike off of a car. The car puts out too much power and can damage the charging system, maybe the ignition too since our ignition seems to be fragile.
I don't know how often I've corrected this little bit of urban mythology... a little knowledge can be a dangerous thing and this is an example of it.
A power source - be it a battery or a car or a jumbo jet - doesn't push power into the flat battery. Rather it makes it available and the flat battery draws power from the source, at the rate the flat battery demands (up to the maximum rate available from the source). If the source is regulated or unable to provide the demanded current the flat battery demands (eg: trying to use a battery charger to jump start) or if the jumper leads etc you use are unable to carry the current the flat battery draws then you'll have problems, otherwise you can jump the bike off whatever 12V source you have available. The battery itself will act as a buffer/filter against any spikes, but if you're still worried just leave the car/boat/jumbo jet engines off to minimise spikes that might possibly (very minor chance) damage the ignition.
To address the original question of jumping the bike via the aux power socket - NO. There's a reason jumper leads and battery cables are as thick as they are, and the bike's internal wiring would simply melt if it wasn't for the fact that the fuses would blow first. You CAN recharge the battery via this socket but trying to jump start it this way's just asking for a melted bike.
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Re: Battery Jump Through Aux Power Plug?
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Joined: Aug 2007
Posts: 90
Member
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Member
Joined: Aug 2007
Posts: 90 |
Thanks Matt, I was about to go into details about this myself. If you're looking for an instant boost/start then the only way is with booster cables, or packing around a spare charged battery, or even so new fancy dancy lighter kit (never used them, have no idea how well they work on the side of the road). But I believe the smartest thing to set up at home or in your garage is a 2Amp trickel charger. The one we have is the size of you fist and mounted on the wall, the leads that come off of it has a SAE 2 pin plug, in which you can plug either a set of gator clips for tempruary use, eyelets to mount to your battery long term and have the plug sticking out somewheres (under the seat), or a male ended cigerate lighter plug (we picked up a BMW adapter lead). This set up will charge the battery over night enough to start the bike, will also keep the battery charged during winter and prolonging it's battery life. Not 100% sure, but I believe this set up cost us less then $100CAD
Dormaar
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Re: Battery Jump Through Aux Power Plug?
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Joined: Feb 2006
Posts: 3,099
Loquacious
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Loquacious
Joined: Feb 2006
Posts: 3,099 |
Here's my thoughts on the subject:
Batteries for our bikes cost around $80.
If you need to jump a battery, It should be replaced.
Lead acid batteries can sulfate, short cells, and if
not maintained be dry.
Sure, you can make the bike start by jumping it off,
but what's gonna happen when the alternator is trying
to charge a bad battery? It's gonna fry! And maybe take
some other components down with it????
That being said, I have the original battery in my '03.
Now I've gone and jinxed myself.
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Re: Battery Jump Through Aux Power Plug?
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Joined: Feb 2007
Posts: 23,217 Likes: 61
Fe Butt
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Fe Butt
Joined: Feb 2007
Posts: 23,217 Likes: 61 |
All I can say is I have seen it happen when a bike was jumped from a car and then it wouldn't charge. Now there may have been an underlying problem to start that made look as if it was from juumping I don't know since I wasn't around to diagnose the problem and I never do it to test it. I do know what a car pushes when running and I won't jump my bike from it, if you choose to, be my guest.
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 12,164 Likes: 1
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,164 Likes: 1 |
There were probably charging system/battery problems to begin with.
Soren
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 6,821
Bar Shake
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Bar Shake
Joined: Jan 2005
Posts: 6,821 |
Quote:
The CCA are still too high for the bike but probably better than with the car running.
The CCA (cold cranking amperage) is the available power to draw on. As Matt said, the amp draw is determined by the draw, not by the source.
Voltage is the amount of electrical "pressure". Now if you try to jump your bike from a 24 volt source, you're screwed.
But any 12 volt source will be fine, so long as it has sufficient available amperage.
As for jumping through the accessory plug, the amperage draw for the starter is too high and will blow the fuse or let the smoke out. You could hook up to a car battery through the plug and let it charge for about thirty minutes, unplug it and you may have enough charge to start your bike.
Contra todo mal, mezcal; contra todo bien, también
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Re: Battery Jump Through Aux Power Plug?
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Joined: Jan 2005
Posts: 6,821
Bar Shake
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Bar Shake
Joined: Jan 2005
Posts: 6,821 |
Quote:
I do know what a car pushes when running and I won't jump my bike from it, if you choose to, be my guest.
Amperage is not pushed, it's pulled.
Contra todo mal, mezcal; contra todo bien, también
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