Can I Jump Start Bike From Car?

[j.silvs]

As title says really.

Think I left my parking light on the bike and have come to a flat battery.

If I put positive on to bike and car, and neg on car to say like a foot peg or something will this work?

Thanks

[Turkish]

Yes, but dont start the car.
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ZX-6R G2
CBR125R RW6

[P.]

[ms51ves3]

[j.silvs]

I keep reading thing about people saying it could fry ECU, or electrics on the bike...

This true? - if it's kind of 50/50 I may just buy a charger?

[P.]

I've jump started cars off my bike and bikes off cars, my friends Clio sport will not let you drain power unless the ignition is on. Some french safety cut out bollocks.

So it had to be running anyway.

[Turkish]

[ms51ves3]

[P.]

Uhuh but you have to remove the battery.

You cannot get to it, hidden behind covers, it has a large jump point which is only active when IGN in set to on.

[dragstaar]

I get paranoid that I'll fry my electrics if I start the car, so never do. It fires up first time with the car engine off anyway.

During winter months my bike doesn't move for a couple of weeks at a time and the battery is always flat. I can't be bothered to bump start in the freezing cold, so I always jump it from the car.

Once she's warmed up and I've ridden it for a few minutes, she fires up on the button every time. I don't think there's any issues.

NB - I know this probably won't apply to your bike seeing as it has parking lights and all that shabaz but just in case anyone else is reading. Don't do this if you have an older 6v bike. That said, I don't think anyone who owns and rides a 6v bike will need to be told that lol.

[haroman666]

With the car running, the alternator is forcing amps into the batteries. Cars run higher ampereage than bikes and so the bike battery and reg/rec cant handle what's being pumped into by the car. I fried a battery/reg/rec doing this.
With the car off the bike merely draws all it needs from the car battery.

It's the difference between drinking from a fire hose and a normal drinking straw.
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The mistresses: 2000 Honda CBR600f, 2000 Honda VTR1000

[johnsmith222]

[Islander]

[j.silvs]

Thanks for all replies, my mate just so happened to mention he has a battery charger so will be using that!

[Notj7]

Don't worry about it. Jump started my old 125 with an Audi.

You don't even need to start the car.
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Left the forum.

[J.M.]

I jump started my bike with a car.

Though... my bike is 500cc and the car was 850cc... so I wasn't worried for a second
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2004 R1 & 2018 XSR900

[nightshaddow]

no problem jumping off any battery that is powerfull enough

i used to work for a tyre fitting company that did hgv's and quite often would jump my 125 from one of a trucks batterys
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"WHAT DO YOU MEAN 100 MPH THATS IMPOSSIBLE Its chinese OFFICER."
Current rides CB 125 TDE(the next project) NS125RK ( now on the road ) CB125TDC (soon to be project 17) melody ( the nephews )

[GetawayDj]

It'll be fine, jumped my diversion off a campervan with ignition on and both leads connected
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CBF 125 (sold), XJ 600 Diversion (sold), RF900
Renault Kangoo x2 (sold), Ford Transit x 2

[Teflon-Mike]

[BTTD]

As Tef says.
Probably be fine, but there's a chance that the running car alternator will fuk you.

I've fitted an Anderson plug to my current bike. Makes charging easy, and jumping possible (battery is under and up the tank ffs).

[Islander]

Eh? Regulators don't work that way round - maybe one of the old electromechanical shunt jobbies might have but a semiconductor regulator whether thyristor based or mosfet based certainly won't.. If a slightly higher voltage appears from the charging vehicle the bike's regulator won't do a thing and it certainly won't be damaged by it. Additionally, any spikes from the car's reg/rec (and there's no real reason that there should be) will be absorbed by the massive extremely low impedance smoothing device that is the car's battery..

[Islander]

[Ariel Badger]

No way can you do this, car volts are not the same as bike volts and you should never try to mix them. The amperage may seem similar but it will not be compatible.
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Bikers make great organ donors, get 115 on your licence today.

[haroman666]

https://i1247.photobucket.com/albums/gg630/haroman6661/DSC05723.jpg

This is what happens when you jump from a running car.
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The mistresses: 2000 Honda CBR600f, 2000 Honda VTR1000

[Islander]