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24-06-15, 10:27 AM | #1 |
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Battery voltage & a couple of dodgy cranks
Across the terminals.....
Measuring 12.43v after sitting a week 14.2-14.5 with engine running. 13v with engine off after a long run & dropping 0.02 v every minute or so (probably due to have the multimeter running on it) and i expect settling at the 12.43v mark. And this is after using a optimiser, i've had a couple of dodgy starts recently where the whole bike doesnt crank & no displaye but then 2nd time is usually does. I did a flick back and forward of the cut off switch & this might have sorted it. Recently i had the front fairing off so the display connector was disconnected. Before i take her to bits, can anyone just confirm if it looks like the batteries borderline on it's way out? The battery (varta) is probably around the 4-5 year old mark. Cheers btw.
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Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 24-06-15 at 10:29 AM. |
24-06-15, 11:34 AM | #2 |
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Re: Battery voltage & a couple of dodgy cranks
sounds like the battery is on its last legs.
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24-06-15, 12:05 PM | #3 |
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Re: Battery voltage & a couple of dodgy cranks
+1 on the battery dying. I just got my 2006 K6 which still has the original battery. The dealer told me they like to fit a new battery before selling, but didn't have the correct one in stock. So when I got it home, I checked the old battery.
13.05V two hours after a 50-mile run (engine off). 48 hours later (engine had not been run in the meantime), 12.95V. I'd expect it to be around 12.6 / 12.7 after a week. It's maybe worth double checking the main earth point is clean and the battery terminals are clean and tight, any problems with those could also contribute to the starter not cranking. |
24-06-15, 04:27 PM | #4 |
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Re: Battery voltage & a couple of dodgy cranks
http://www.ebay.co.uk/itm/Varta-AGM-...item23253acf63
Looks like i'll be buying a replacement, im unsure of wether this is a good crank type or if im buying a name tbh.
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Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. |
24-06-15, 04:31 PM | #5 |
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Re: Battery voltage & a couple of dodgy cranks
i would say this one is better as it has higher cranking amps http://www.ebay.co.uk/itm/Lucas-AGM-...48466531&rt=nc lucas are also a known brand name that usually carries a reliability.
you will find that most branded battery's will come out the same factory anyway. Last edited by Bibio; 24-06-15 at 04:32 PM. |
24-06-15, 05:20 PM | #6 |
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Re: Battery voltage & a couple of dodgy cranks
Cheers for the advice bibio & craig, bullet bit & new battery ordered using bibio's link.
Rebranding, one of my pet hates bibio & im a stickler for trying to find out the cheaper version.
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Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 24-06-15 at 06:05 PM. |
25-06-15, 07:13 AM | #7 |
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Re: Battery voltage & a couple of dodgy cranks
Those dodgy starts sound more like a loose connection to me.
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25-06-15, 09:51 AM | #8 |
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Re: Battery voltage & a couple of dodgy cranks
Itll be the emergency cut off switch yorkie im sure of it. It just sits there doing nothing with the elements creeping in doesnt it! A few mad flicks to ensure a clean connection usually sorts it. I really should do it properly and dismantle it but my heated grip is going to make it a bugger to remove.
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Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. Last edited by muzikill; 25-06-15 at 11:45 AM. |
25-06-15, 11:26 AM | #9 |
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Re: Battery voltage & a couple of dodgy cranks
If it's any consolation to getting a new battery, check out MDS batteries. Forum members get a discount and their turn around is amazing (Mon-Fri).
I've no affiliation to them, just recently bought a Yuasu battery for a K4. |
25-06-15, 11:45 AM | #10 | |
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Re: Battery voltage & a couple of dodgy cranks
Quote:
Already bought but a good reminder for anyone else thinking about a replcaement soon
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Learn to maintain your bike, take it apart, rebuild the engine & more (using better bolts ), drop it & fix it again! K3 Job c.v: Engine:remove/split/rebuild/refit. Replace:Gearbox,Fuel pump,Gaskets. Piston clean,rings. Overhaul:Throttle body,Injectors,Brakes,Forks. Remove/refit:Exhaust,Radiator,Oil cooler,Throttle,Air filter,Tank. Replace: Oil,Coolant,grease,brake hoses & bleed. |
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