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HAYLEYB

Joined:

Aug 13

Posts: 1

HAYLEYB says:

FLAT BATTERY

I have a Yamaha XJ6 which is only 3 uears old and only has 3500 miles on the clock.  I am not able to ride it very offen so consequently it is left in the garage for 2 - 3 months at a time.  I went to take it out at the weekend and I think the battery is flat at when I turned the key there was nothing.  Can I jump start it from a car or another bike and is it likely to be the battery as it is relatively new :smile

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  • Posted 2 years ago (19 August 2013 11:27)

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MarcusMarsh

Joined:

Aug 09

Posts: 2705

MarcusMarsh says:

Flat battery

I would not recommend that you use a car battery as this may damage the electrics in your bike.  Either use another bike to jump start it or charge your battery.  An intelligent charger will let you know what state your batter is in.  Even if it has completely discharged a good charger will probably recover it if it is fairly new.

If your bike has an alarm this will not help your problem and you may need to leave the battery connected to a charger when not in use.    

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bmwgs

Joined:

Mar 10

Posts: 1032

bmwgs says:

.

I have jumped started my bike a bmw r100gs off a car when I could not start it after work one night the bike start fine and will runs fine.

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fogie

Joined:

Jan 04

Posts: 825

fogie says:

battery myths

You can jump start your bike from a lorry battery if you want. A 12volt battery is just a 12volt battery, no matter how big it is.

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CB13

Joined:

Apr 10

Posts: 740

CB13 says:

There was a warning...

in an article about batteries in MCN or some other bike mag about jump starting bikes from car batteries.I seem to recall the possibility of frying your ECU.Get a smart charger,much cheaper than a new ECU.

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MarcusMarsh

Joined:

Aug 09

Posts: 2705

MarcusMarsh says:

Flat battery

BM's take a lot of cranking and I am sure that starting an 1100GS from a car would cause no issues.  I jumped my GS1000 from a car more than once back in the day.  However, modern electrics are very different and I am sure that a car battery connected to my 1200RT would make a right (expensive) mess of the can-bus electrical system.  I personally wouldn't risk it on an XJ either.  It's not just a case of volts, it the amperage that can cause the damage.

It may be OK, it may not but what is the point in risking it for the sake of the cost of a charger or finding another bike to connect jump leads to?      

[This Reply has been modified by the Author]

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domster

Joined:

Sep 12

Posts: 204

domster says:

Batteries

Fogie's right, the amperage is just a measure of what's available. The system will only draw what it needs. 

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Ginnelli

Joined:

Mar 07

Posts: 270

Ginnelli says:

Optimate 4 / Can-bus

I have a flat battery on my bike which i,ve charged twice now and i,m going to fit a new battery next week and get an optimate 4 charger so i can leave it connected when i,m not using it. The new optimate 4 is can-bus compatable but what is it.

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James600zx

Joined:

Sep 07

Posts: 2796

James600zx says:

Jump start

As long as the two batteries are 12v it'll be fine.

I've jump started a motorcycle from a car several times. In theory if the car engine is running, its alternator can push more current than is healthy for the bike but I had no problems. These days I would make sure the car isn't running. It's not necessary anyway.

The manual for the aforementioned BMW 1200RT only requires that the donor vehicle has a 12v battery (page 134) but interestingly it suggests that you should "run the engine of the donor vehicle during jump starting."  Still, I wouldn't.

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shuggie1

Joined:

Apr 07

Posts: 1554

shuggie1 says:

Ginelli...

I use an optimate, great product, don't worry all summer when bike being used regualrly, but leave plugged in all winter when only using every couple of weeks. Cost me about £45 a few years ago

Can bus compatible, means (I think) it doesn't screw up your ECU or fully integrated intelligent wiring loom

 

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shuggie1

Joined:

Apr 07

Posts: 1554

shuggie1 says:

Ginelli...

I use an optimate, great product, don't worry all summer when bike being used regualrly, but leave plugged in all winter when only using every couple of weeks. Cost me about £45 a few years ago

Can bus compatible, means (I think) it doesn't screw up your ECU or fully integrated intelligent wiring loom

 

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