MV Agusta Forum banner

1 - 16 of 16 Posts

·
Registered
Joined
·
102 Posts
Discussion Starter #1
Hey guys - weather combined with busy schedule led to not riding for about 10 days. Does the F4 have a high power draw not being started and rode regularly? I doubt the flashing LED draws much power. The bike is only 2 months old meaning I’ve only had it two months. It’s a 2012 and the owner of the dealership claimed they'd put in a new battery but it wouldn’t be the first time he lied or didn’t follow through on something. When I went to start it the dash and all lights looked as bright as usual but the starter would only turn over for ½ a second and then stop. I didn’t notice any dimming of the dash or lights while attempting to start. I hooked a charger up to the battery for a few minutes and it fired right up with the charger attached. I then let it warm up for 5 minutes, shut it off and it fired right back up.

I find it very hard to believe it’s the battery if it truly is only 2 months old. Any easy way to check aside from continuing to use it and hope it doesn’t strand me or should I just replace it?

If the dealership didn’t replace it I could understand it being the battery because I would assume it sat for weeks or months at a time without being charged. Any particular brand you'd recommend?

I guess after it sits all day while I'm working I’ll know for sure.
 

·
Registered
Joined
·
234 Posts
Are the bike on the side stand? If so, try to put a piece of rubber material under the stand so it don't touch the ground.

Not sure about replacing it, but the recommended one appears to be the yausa.
 

·
Registered
Joined
·
1,216 Posts
Those batteries can indeed drain enough in ten days to prevent starting, (especially if you have an alarm fitted.) The standard immobiliser circuitry is always active.

The battery supplied in my MY10 F4 was actually defective. It would lose enough charge to stop a full crank over within only a few minutes. The Yuasa the dealership replaced it with has been fine ever since. (Though it does discharge in 7-10 days.)

Also, once those batteries deep discharge, they're never the same again. I doubt 10 days is enough to do permanent damage though.

It's annoying how it only cranks for half a turn when the battery's low. I've been in that situation myself. It probably does it to prevent an undesired electrical situation, like too high a current draw or something.

Si
 

·
Registered
Joined
·
102 Posts
Discussion Starter #4
Thanks guys! If it starts after work I suppose I should be good. Sound like I'll toss the battery tender on it if it's going to sit for more than a few days. The bike is 100% stock so no aftermarket alarms or anything.
 

·
Registered
Joined
·
102 Posts
Discussion Starter #5
Well I decided to check at lunch and apparently the battery is shot. Same 1/2 second try and then nothing. Is it possible for a 2 month old battery to completely die in 10 days?
 

·
Registered
Joined
·
9,955 Posts
Well I decided to check at lunch and apparently the battery is shot. Same 1/2 second try and then nothing. Is it possible for a 2 month old battery to completely die in 10 days?
If it is a lead acid battery it should be kept charged up. If left in a discharged state then the plates sulfate and knacker it up.

It looks like you have pioneered the knowledge on how long..Try a long slow charge with a proper motorcycle charger...

Then check your cable connections are tight and clean.

Joe
 

·
Formerly - dagmvagusta
Joined
·
423 Posts
Had the same problem on my 2012. The stock yusa battery sucks!! I purchased a shorai lfx ba-12 lithium battery and the charger to go with it. Have had it for a year or so and keep it on the charger when not riding including long winter period and she fires right up every time.


Sent from Motorcycle.com App
 

·
Registered
Joined
·
102 Posts
Discussion Starter #8
My last ride 10 days ago was over 2 hours long so I know it was as charged as it could get. I'll try tossing it on my microprocessor automatic charger overnight but I'm going to go buy a new battery tonight in case. Very hard to believe a 2 month old battery would die completely in 10 days of inactivity.
 

·
Formerly - dagmvagusta
Joined
·
423 Posts
I wouldn't bank on the battery being only 2 months old and even if it was if it was not charged properly and then fully discharged that can damage those cells. I have ridden for damn near 8 hours on mine and it fires right up


Sent from Motorcycle.com App
 

·
Registered
Joined
·
661 Posts
defective battery comes to mind. Any brand of bat can fail if discharged completely multiple times or left discharged for more than several weeks. sulfation sets in over time if left discharged. replace battery first is cheapest solution and maintain charge on it if left sitting more than a month. If it drained in 10 days, I think the battery is gone and dealer lied. If there is alarm system, then need to measure drain on it as its the only other thing that can cause key off discharge, its the only thing added to the bike so that should be the other possible cause.
 

·
Super Moderator
Joined
·
22,446 Posts
Seismic, what is the brand of battery in your bike....I don't want to make predictions here.
 

·
Registered
Joined
·
102 Posts
Discussion Starter #12
Thanks for all the replies. It was dead last night I push started it and went to buy a new battery. Working fine now. I am going to try to see if I can get a warranty replacement for the Interstate Battery it came with. We'll see.

Bike is bone stock no alarms or any electrical updates.
 

·
Super Moderator
Joined
·
22,446 Posts
Wow, that's the first non-Koyo failure I've heard of in a bike. Most of the post 2010 bikes are delivered with a sub-standard Koyo.
 

·
Registered
Joined
·
102 Posts
Discussion Starter #14
I ride with my brights on all the time. I would assume the charging system would be able to keep the battery charged regardless.
 

·
Super Moderator
Joined
·
22,446 Posts
Yes, it would. The problem comes when parasitic drain depletes the battery when stored.
 

·
Registered
Joined
·
661 Posts
My Koyo is kicking butt, I got the bike with fresh battery and it tests out with great voltage. You can tell a less than new battery in a store if you test the voltage and its below 12.4V. That means that the battery was sitting a long time and the store have to put a charge on it. Just after charging these AGM should be about 13V or higher depending on the temperature (hot bike will make it lower until it cools). After it sat for a week or two it should be easily above 12.7 still. I've seen brand new Yuasa YTZ10S in store with barely 12 V , that tells me that the battery was at the store for over half a year with no maintainance charge applied. I would not pay full price for that. Nothing wrong with Koyo as long as it is not a defective one Any brand have its defects. I have a car that I bought new with a Panasonic Japan made battery, it was an out of box failure that left me stranded 1 week into new car ownership. When I brought it in they automatically suspected the battery as they had a slew of them go bad.
 
1 - 16 of 16 Posts
Top