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Which Battery?

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remfanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote remfanuk Quote  Post ReplyReply Direct Link To This Post Topic: Which Battery?
    Posted: 28 Sep 2021 at 16:15
My V50 mk2 battery seems to be rather dead...will power the headlight but just clicks when trying to start.  I haven't used if for some time so suspect the battery will need replacing.

Has anyone got a link they could share to a replacement battery please?  The bike is not at my home so can't measure the size of the battery as some internet searching produces various different types all with different dimensions.  Looking for something up to no more than £100.

Many thanks.
NIGEL

My Guzzi V50 Build Blog... https://motoguzziv50.wordpress.com/

ZXR 750 J1 Build Blog...https://kawasakizxr750.wordpress.com/
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remfanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote remfanuk Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 16:22
I should add that the current battery is an Odeyssey PC625.
NIGEL

My Guzzi V50 Build Blog... https://motoguzziv50.wordpress.com/

ZXR 750 J1 Build Blog...https://kawasakizxr750.wordpress.com/
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 16:29
Tayna are probably the best, they have a very good range and good prices. Next day delivery.

My advice would be to go for the full size lead acid battery rather than the reduced size and capacity AGM type.

Brian.

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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 16:35
Tayna and look at the specs not the price I bought a Battery for the 1100 EV and the V1000 for £34 higher spec than batteries at 2-3x the price and a longer warranty put in your bike they produce a list of batteries that fit. very quick delivery the cheap AGM Batteries I bought one has been in the EV for 5+ yrs and this one will charge fine on a system designed for lead acid batteries something you need as otherwise it will die and fast
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Post Options Post Options   Thanks (0) Thanks(0)   Quote paulbricey Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 17:10
I fitted this to V50 Mk3 (cheap as I didn't know if it bike was even a runner) & it's still running fine 1000+miles and 1.5 years later - tendered with optimate 1 when parked in garage & when I remember to plug it in. 

I know they sometimes get a bad press & I've had great life from Yuasa on the Griso; but this seems to be fine (plus it leaves extra space around battery tray for air filters & other oddments)

BTW hope it's battery and not original switchgear/wiring/earth etc (I'm sure you know the drill)




Griso 1200 8V, V50
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remfanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote remfanuk Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 17:23
thanks for the quick replies folks.
i have a new battery charger that maintains and repairs batteries, but i think this battery is kaput!

anything obviously incorrect about this one...


cheers.
NIGEL

My Guzzi V50 Build Blog... https://motoguzziv50.wordpress.com/

ZXR 750 J1 Build Blog...https://kawasakizxr750.wordpress.com/
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 17:58
Nothing wrong with that Exide.

AGM batteries require a charge rate of minimum 2 Amps if discharged. A lot of the Optimate style battery tenders won't do that.
AGM batteries do not like being discharged, it kills them. Lead acid batteries are more flexible in this respect.
Given that you have the space for a 30AH battery on the v50, a smaller AGM one is a waste of money in my opinion. All batteries lose capacity over time, so the less you have to start with the less time they usually last.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 18:38
https://www.tayna.co.uk/motorcycle-batteries/exide/agm12-31/

That battery will be excellent but it is the maximum physical size that fits which means that it could potentially interfere with pod filters if fitted as mentioned earlier in the thread. 

CHRIS
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Grandadandy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Grandadandy Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 18:42
If your battery powers the lights OK then are you sure it's faulty?
If the starter wiring mod hasn't been carried out then that could be the problem.
Search for 'click no crank' on this site for details.

Andy
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remfanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote remfanuk Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 18:47
I will double check the size of the dead battery.

I bought a Noco Genius 5 to try and recover the battery as 8t got good online reviews. Disappointed that it cannot bring it back to life.

The wiring loom was replaced and new switchgear when i completed a restoration.  Not discounting a problem with the electrics...these things can happen i guess when bikes are stood for a while.
NIGEL

My Guzzi V50 Build Blog... https://motoguzziv50.wordpress.com/

ZXR 750 J1 Build Blog...https://kawasakizxr750.wordpress.com/
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Grandadandy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Grandadandy Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 19:32
Originally posted by remfanuk remfanuk wrote:

I will double check the size of the dead battery.
The wiring loom was replaced and new switchgear when i completed a restoration.  Not discounting a problem with the electrics...these things can happen i guess when bikes are stood for a while.

OK, but if the replacement loom did not include the starter circuit mod then this could still be your problem - it's a simple modification and worth checking before spending your hard earned.

Andy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2021 at 22:26
Nigel, when you say it just clicks, what sort of click? A light click of a small relay or the clunk of the starter solenoid moving?
Do the lights stay on at the same brightness when this happens?
If so then it is likely that a mod to the start relay wiring with a direct feed from the battery to the start relay contact would cure your problem.
If the lights reduce drastically then it will be the battery dying.
Brian.

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remfanuk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote remfanuk Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2021 at 07:34
the wiring loom was not a replacement, it was bespoke and it has always started okay.
the click is just a relay type click and not a clunk.
the headlight dims or goes off when pressing the starter...sorry cant remember which one.
i havent ridden the bike for a couple of years.  for £60 i will try this battery and report back.
many thanks for your comments and advice guys, its much appreciated. Smile
NIGEL

My Guzzi V50 Build Blog... https://motoguzziv50.wordpress.com/

ZXR 750 J1 Build Blog...https://kawasakizxr750.wordpress.com/
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2021 at 08:09
If the headlight dims drastically when pressing the starter then the probability is that the battery is dead.
The only other possibility is a bad connection on the battery itself or the battery to frame connector.
Brian.

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AdrianW View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AdrianW Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2021 at 09:36
>>AGM batteries require a charge rate of minimum 2 Amps if discharged. A lot of the Optimate style battery tenders won't do that.  <<

Must admit that is not my experience. I have been using AGM batteries for quite a few years now charging with an Optimate III SP  which is I believe 1.8 amps (taken off the bikes, not in situ) and never had problems..

I agree that the conventional lead type will be fine for the Guzzi though. I have to use AGM on the Buell as the battery lies on its side..... !!

Adrian
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