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Looking for some expertise here please

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yamahaha
Derestricted Danger



Joined: 06 Sep 2019
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PostPosted: 16:47 - 07 Sep 2019    Post subject: Reply with quote
new battery but exactly the scenario. Thanks
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Easy-X
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Joined: 08 Mar 2019
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PostPosted: 16:52 - 07 Sep 2019    Post subject: Reply with quote
yamahaha wrote:
Now I presume the horns a big 'load' same as starter is a big 'load' when ignition gets turned on but not started


Depends... how big's your horn Wink
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yamahaha
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PostPosted: 20:23 - 07 Sep 2019    Post subject: Reply with quote
so had my old battery ( original 2009 swapped earlier this year ) and had on trickle charge all day.

swapped it over, bike wouldnt start just the clicking. Measured voltage 9v. so expected.

went to 'new' battery, off bike, and says 12.5v. did as someone suggested and added a halagen and dab each end on a terminal. battery 0v

did the same test on the old battery. it lit the bulb, just about and dropped to 2.5v

conclusion. then new battery is a duffer. thanks all.
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Easy-X
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Joined: 08 Mar 2019
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PostPosted: 21:38 - 07 Sep 2019    Post subject: Reply with quote
yamahaha wrote:
then new battery is a duffer. thanks all.


Staggered, 0V doesn't seem possible! You're really unlucky to find such a dud Sad Hope a new battery sorts it Thumbs Up
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yamahaha
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PostPosted: 21:43 - 07 Sep 2019    Post subject: Reply with quote
odd thing is it might not drop down to 0v if I didnt have a 55w halogen attached.

so for the bike to be able to start on the kickstart it must have had just enough juice to supply the fuel and running bulbs 2x3w

actually bought battery 11 feb 2019

be interesting if theres any warranty?
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Biggavano1690
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Joined: 07 Sep 2019
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PostPosted: 22:33 - 07 Sep 2019    Post subject: Reply with quote
I would say there's a bad earth simples
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yamahaha
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PostPosted: 22:38 - 07 Sep 2019    Post subject: Reply with quote
you didnt read the thread did you lol Wink
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Easy-X
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PostPosted: 00:00 - 08 Sep 2019    Post subject: Reply with quote
yamahaha wrote:
odd thing is it might not drop down to 0v if I didnt have a 55w halogen attached.

so for the bike to be able to start on the kickstart it must have had just enough juice to supply the fuel and running bulbs 2x3w

actually bought battery 11 feb 2019

be interesting if theres any warranty?


Oh yes, you'll always get a voltage drop of some sort and a battery at rest versus under load, yes... all fine but I wouldn't expect a drop like that! Serious internal battery fault. Probably only materialises at a certain current threshold Thinking
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Lone-Wolf
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Joined: 13 Jul 2004
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PostPosted: 00:41 - 08 Sep 2019    Post subject: Reply with quote
Easy-X wrote:


Oh yes, you'll always get a voltage drop of some sort and a battery at rest versus under load, yes... all fine but I wouldn't expect a drop like that! Serious internal battery fault. Probably only materialises at a certain current threshold Thinking


Wotcha.

Did you look at the volt drop HERE ?

I didn't think it was the battery at fault until I did that test.
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mentalboy
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Joined: 05 May 2012
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PostPosted: 03:54 - 08 Sep 2019    Post subject: Reply with quote
WD Forte wrote:

My guess is without seeing/getting me mitts on the bike
that it does have all the hall marks of an iffy ground connection.


Speaking of mitts, heated grips? These things are a proper PITA on smaller machines if they haven't been fitted properly or are cheap and nasty... Start there for an earth issue, any other non-standard electric gizmos?
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yamahaha
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PostPosted: 09:46 - 08 Sep 2019    Post subject: Reply with quote
these are oxford heated grips.

the battery drop/load test was done without it being on the bike.

my old battery can light a bulb but drops to about 3v from 9v

the new batt, also off the bike literally goes from 12.5v to 0v

neither are on the bike, so its not the bike.
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dynax
Trackday Trickster



Joined: 06 May 2019
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PostPosted: 10:19 - 08 Sep 2019    Post subject: Reply with quote
There must be something wrong with the bike for it to fcuk up a new battery, batterys don't usually fcuk themselves up Thumbs Up
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yamahaha
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PostPosted: 10:54 - 08 Sep 2019    Post subject: Reply with quote
or its just a duffer

the last battery was 9 years old and replaced in feb
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mentalboy
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PostPosted: 12:45 - 08 Sep 2019    Post subject: Reply with quote
yamahaha wrote:
or its just a duffer

the last battery was 9 years old and replaced in feb


That will be easily proved by taking it back to where you got it from, new batteries usuallly come with some fairly long warranties.
Amazon however does seem to be making a name for itself by selling sub par genuine goods.....
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yamahaha
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PostPosted: 13:16 - 08 Sep 2019    Post subject: Reply with quote
its fro the MC shop that services and MOTs my bike last 10 years.

its a yuasa or something and they have 12 month warranties. will see the shop tomorrow.
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yamahaha
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PostPosted: 21:47 - 09 Sep 2019    Post subject: Reply with quote
they changed the battery fine.

also told me that new batteries dont last now and can collapse at any time
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Old Thread Alert!

The last post was made 4 years, 230 days ago. Instead of replying here, would creating a new thread be more useful?
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