Help Battery gone flat

Noelie

I left the lights on and the battery has gone dead, can it be jumped from a car battery or do the have different voltages?

Any help much appricated. Thanks

tk123

Assuming you don't have a kick start have you tried starting it while putting it in gear, holding in the clutch and moving the bike forwards (my bro can do this running but i'm too small - i'd just move the bike around in a circle)? Just be careful that you don't let go of the clutch and let the bike run away! You might need to use 2nd if the bike doesn't move in 1st..

Steffano2002

A little googling can help sometimes...

On this website I found the following:

How To Jump Start Your Motorcycle

Here are some steps to follow to jump start your motorcycle. You may want to print out these steps and include in a ziplock bag also containing your motorcycle jumper cables.

The subject of jumping a battery is controversial. There are many opinions on the best way to jump start a dead battery on a motorcycle. Bike electrical systems are not the same and those differences can cause problems. The best course of action might be to call for a tow truck and get a new battery.
Difficulty: Average
Time Required: 15 minutes
Here's How:

1. Arrange another bike so its good battery is close to the dead battery.
2. Attach one red clip (+) of the jumper cables to the positive (+) terminal of the dead battery.
3. Attach the other red clip (+) to the positive (+) terminal of the good battery.
4. Attach one black clip (-) to the frame of the bike with the dead battery or to the negative (-) terminal of the dead battery if a suitable frame location cannot be found.
5. Attach the other black clip (-) to the frame of the bike with the good battery or to the negative (-) terminal of the good battery if a suitable frame location cannot be found.
6. Start the bike with the dead battery. As soon as it starts, remove the jumper cables in the reverse order that they were attached.

Tips:

1. If you use a car battery for the good battery, use the same procedure as above except DO NOT START THE CAR OR HAVE IT RUNNING. Incompatibilities between the car and motorcycle electrical systems may destroy some of the electrical components.
2. If you have a roadside assistance plan for your bike, use your cellphone to call for help. You may have to wait an hour or so before help arrives. Many plans will tow you to the nearest bike dealer for your make.
3. If you can't get the bike started, you'll need to use the cellphone to summon help. A hat and water bottle will be essential if you encounter a long wait in the sun.

Noelie

thanks for the info guys.
tk- the batttery is dead so a push start is no good, as once you drop the clutch you still need a spark to ignite the engine, or do you?
I'll hook it up to my dads car tomorrow and see how that goes, hopefully i won't fry any components.
Thanks again.

Steffano2002

Noelie wrote:

thanks for the info guys.
tk- the batttery is dead so a push start is no good, as once you drop the clutch you still need a spark to ignite the engine, or do you?
I'll hook it up to my dads car tomorrow and see how that goes, hopefully i won't fry any components.
Thanks again.

The altenator will provide you with the required spark as when you release the clutch the engine starts ticking over.

greglo23

before you jumpstart from a car check whether its a 6 or 12 volt battery in your bike !! if its a 6 volt it will have 3 cells and a 12 volt will have 6 cells. putting 12 volts through a 6 volt system will destroy any electronics you've got. you would be better advised to buy a 6/12 volt battery charger as it will be useful in the future. a flat battery will take a very long time to fully charge using only the bikes charging system if it will even do it at all !!

bushy...

If the battery is gone way down , it is not a good idea to jump start it and then let the charging system of the bike bring it back up.You may damage both the battery and the charging system,either or both may fail in the future.Do not try to charge it with a high current/fast charger either.Use something like an optimate or a slow charger.
As far as alternators providing sparks, this only applies to some (usually smaller) bikes,they have a separate high voltage winding for it. Other bikes ecus/cdis run off the 12v system (some multiply it internally before it goes to the coils) , whatever your still left with the issue of the charging system trying to bring up a totally flat battery & run the bike at the same time

Jamesobrady

I usually jump it off the car battery if need be....I've yet to be able to pushstart the sv on my own.
Make sure car is not running.....connect batteries.....wait 2-3 minutes...start bike.




...I accept no responsibility for my advice, but it works for me.

Dub13

This always happens to me,you should check out This thread.

sutty

you best bet would be a running start. To do it, follow these steps.

Turn the bike on, Make sure the electrics kill switch is set to allow the bike to run.
Then place the bike in first gear.
Hold in the cluch.
Run with the bike, or roll it down a hill. Anything to pick up speed and momentum.
Then pop the cluch. The bike will start to turn over. Once the bike starts turning, hold back in the cluch, place the bike in netrul. Leave the bike to run (with lights off if there is a lights on/off switch) for five minutes. Then take the bike our for a spin. 30min or so should charge bike battery up again to a level where it will be safe to electro start it.

Leaving the bike to run for a few minutes give you the back up of maybe one or two starts if it dies while in the start of your spin.

threetwentynine

greglo23 wrote:

before you jumpstart from a car check whether its a 6 or 12 volt battery in your bike !! if its a 6 volt it will have 3 cells and a 12 volt will have 6 cells. putting 12 volts through a 6 volt system will destroy any electronics you've got. you would be better advised to buy a 6/12 volt battery charger as it will be useful in the future. a flat battery will take a very long time to fully charge using only the bikes charging system if it will even do it at all !!

Some cars are 24 volt, which will give whatever it comes in contact with even more of a belt

Hotblack Desiato

Don't use first gear when push-starting a bike, chances are the back wheel will just lock. Use 2nd or even 3rd gear, this spins the engine more slowly, it really doesn't need to turn very fast to start.

greglo23

threetwentynine wrote:

Some cars are 24 volt, which will give whatever it comes in contact with even more of a belt

as a mechanic for the last 33 years i have never seen a 24 volt car of any description. some 4wd's have 2 batteries wired in parralell but are still 12 volt and a very rare large 4wd is 24 volt but thats about it !!