AberdeenBikers

A couple of months ago I tried to start the bike but the battrey was flat. No surprise there as the battrey was dying anyway, so I jumped it off the car. After a bit of persuassion it sparked into life but it stalled after removing the jump leads. I thought the battrey could be total duff and was draining the supply from the altenator so I removed the battery leads and again jumped it off the car. It started but stalled when I removed the jump leads. Should it have run with the battrey disconnected and if not why not ?.
I don't think theres anything wrong with either the altenator or rec/reg as I'm seeing the voltage rise the correct amount with increased revs. Theres no immobiliser fitted either.
Don't know if it's relevant but for the first few years of having the bike I was going through a battrey a year but put it down to it never being disconnected when laid up over the winter. I bought a Bosch last time and it's lasted about 3 years. Also when I laid the bike up I'm pretty sure the cells were all full but when I went back to it after a good few months (it was never out at all last year) some cells were low and one very low. No signs of leaks either. They were topped up with distilled water. I'll be buying a new battrey anyway but am wondering if theres anything else up that I haven't already checked.

Do not run with battery disconnected you risk damaging alternator/chrging sytem. After three years and standing for a whole year I am not surprised battery is fuked get a trickle charger

So theres nothing more wrong that a new battrey wouldn't fix ?
Like I said I knew the battrey was shagged but thought it would have run after jumping.

Question answered.
Found this on tinternet.

"The alternator uses the car's battery to create magnetism from which battery charging current is generated. It's an effective system, but it requires a good battery to work. When your car's battery is weak, it not only won't start the car; it won't power the alternator, either."

Thanks for the help Missile

Pleased to help.
Before laying up your bike make sure that bettery is charged. If you let a modern battery go flat it is almost impossible to recover, even with a trickle charger.

shizzle.

and you would know all about THAT

Quote from Optimate web site=

If your battery is so badly discharged, or damaged, to the point where it has less than 2 Volts, it is probably irrecoverable. Take your battery to your local dealer and ask him to test it on a “BatteryMateâ€￾ tester/charger. He will be able to tell you the battery’s condition within a matter of seconds – a BatteryMate can also recover very deep-discharged batteries, if at all possible.

After a 6 month report at college on pb batteries yes I would know.


Come on then let’s hear your theory?


And why the (:knob ) just because anyone dares to challenge your opinion?

I called you a knob in response to your "shizzle"

My "advice" comes from reference to the quoted literature. My "knowledge" comes from a University Education.

A little knowledge is dangerous.

Shrek wrote:After a 6 month report at college on pb batteries yes I would know.


Come on then let’s hear your theory?


And why the (:knob ) just because anyone dares to challenge your opinion?

You must be like me Scott only type with 2 fingers then, could have typed the report in a month if you used all your fingers to type

Missile wrote:I called you a knob in response to your "shizzle"

I didn’t feel the need to resort to name calling, I merely said that’s shizzle, no wonder no one on here likes you.

Missile wrote: A little knowledge is dangerous.

Apparently so.

So of your little knowledge what’s your theory then?

Nice edit BTW

I was merely trying to help crankcase.

I have given you one quote which supports my view that a completely flat battery is "probably irrecoverable", but maybe you know better.

Making comments like "shizzle" and "no wonder no one on here likes you" is not really very helpful.

Shrek wrote:no wonder no one on here likes you.

Speak for yourself.

I would say the use of the word shizzle does justify being called a knob, irrespective of whether you're right or wrong. You could easily have said 'I humbly disagree with your opinion my friend'.

Having said that....


shizzle was a lot more fun. :I can't believe it's not butter!

Hey I like you both, so stop being a pair of 's :I can't believe it's not butter!

You f*ck off too.

:cry

Did you see my wee kit car I posted up for you? I reckon I would give you a run for your money in that thing

Yeah but I was just ignoring you.

KARLOS69 wrote:I reckon I would give you a run for your money in that thing

I think you're dreaming! :I can't believe it's not butter!

Missile wrote: I have given you one quote which supports my view that a completely flat battery is "probably irrecoverable",

You went back and changed your post you mean..

When you called my opinion shizzle, I looked for some info on the subject and added it to my post. I note you have not been able to find anything to support your view

See this. I started this.

I'm sorry I asked now.

Don't worry...it's just the biker version of PMT

Missile wrote: I note you have not been able to find anything to support your view

I have not been looking, why would I. I'm still waiting to hear why you would think "If you let a modern battery go flat it is almost impossible to recover"

Just giving you enough rope to hang yourself.....

Shrek wrote:I have not been looking, why would I. I'm still waiting to hear why you would think "If you let a modern battery go flat it is almost impossible to recover"

Just because they are ....


.... OK!