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10-23-2016, 11:27 PM,
#1
Dead battery issues.


Greetings from MInnesota!


I have a 2009 Yamaha 950. If I ride the bike and don't let it sit more than a few days, it starts fine. If I let it sit more than a few days, it will not start. I was able to live with this for a while by leaving a trickle charger on it when I left it parked, and that worked, but I soon got tired of that and got a new battery. The new battery did not solve the problem.


When it's running, the lights horn, etc. all work well and everything seems to be fine. I believe the bike's charging system is functioning properly. I suspect that something is draining my battery when it's parked...but I have no idea where to start looking to troubleshoot the problem. Any suggestions?

I'm new to this forum and this is my first post. I hope I'm doing it right.
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10-24-2016, 12:05 PM,
#2
RE: Dead battery issues.
(10-23-2016, 11:27 PM)Polish Biker Wrote:

Greetings from MInnesota!


I have a 2009 Yamaha 950. If I ride the bike and don't let it sit more than a few days, it starts fine. If I let it sit more than a few days, it will not start. I was able to live with this for a while by leaving a trickle charger on it when I left it parked, and that worked, but I soon got tired of that and got a new battery. The new battery did not solve the problem.


When it's running, the lights horn, etc. all work well and everything seems to be fine. I believe the bike's charging system is functioning properly. I suspect that something is draining my battery when it's parked...but I have no idea where to start looking to troubleshoot the problem. Any suggestions?

I'm new to this forum and this is my first post. I hope I'm doing it right.
get you a volt meter if you don't have one. a cheap one will do. check the battery with it unhooked from the bikes system. if its not fully charged,charge it.then hook up the battery to the bike and see if its loosing power just sitting there with nothing electrical on and not running. if it is then you know you have a drain somewhere. I would have to start unplugging items from the system one at a time ,in order to find what the draw is. other folks on here will be more knowledgable and probably know how to check with a tester to find the culprit. in the meantime I would probably just hook up a battery disconnect switch to isolate the battery from the system for when the bike is just sitting, so nothing can pull from the battery. Oh and you can check the battery while the bike is running with the volt meter to tell if it's charging while running. you will see the battery volts rising if it is.
good luck to ya!
'11 950 tour, mustang seats
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10-31-2016, 08:50 PM, (This post was last modified: 10-31-2016, 08:52 PM by david62.)
#3
RE: Dead battery issues.
(10-23-2016, 11:27 PM)Polish Biker Wrote:

Greetings from MInnesota!


I have a 2009 Yamaha 950. If I ride the bike and don't let it sit more than a few days, it starts fine. If I let it sit more than a few days, it will not start. I was able to live with this for a while by leaving a trickle charger on it when I left it parked, and that worked, but I soon got tired of that and got a new battery. The new battery did not solve the problem.


When it's running, the lights horn, etc. all work well and everything seems to be fine. I believe the bike's charging system is functioning properly. I suspect that something is draining my battery when it's parked...but I have no idea where to start looking to troubleshoot the problem. Any suggestions?

I'm new to this forum and this is my first post. I hope I'm doing it right.
Possibly also check your battery earth, sometimes they do come loose or may need removing and cleaning up.
Reply
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