[goodbadugly]

Originally Posted by mrlmd

Most motorcycle batteries are the AGM maintenance-free sealed types, made like that so they don't spill out acid all over the place when you dump the bike over. You have a dead battery, from disuse and the cold weather. Starting the bike by jumping it and running the bike for 15 min will NOT charge up a dead battery. These bikes have very puny charging systems, just a little more than needed to replace what you use to start the bike. You need to put it on a 1.5-2 amp (no higher) battery charger for maybe 6 hours to charge it up fully again. Charge up your battery fully first and see how it works, you may not need a new one. The only way to test whether a battery is good or bad is to put it on a load tester after it's fully charged up and any battery shop or Autozone or NAPA store or garage should test it for you for free. If you do need a new battery and buy an AGM type, be warned - IT MUST BE FULLY CHARGED UP BEFORE FIRST USE OR IT WILL FAIL PREMATURELY - it will never able to be charged up to full capacity again if you try to start the bike one or two times without charging it up first. If the guy in the battery store fills it with acid and says it's all good to go, it's not. If you don't charge it up fully first, you will be back there in a week or so buying another new battery.
Invest in a small 2 amp battery charger, or a trickle charger to keep on when you are not using the bike for a few weeks and the weather is cold. Stop ripping apart your bike looking to solve an obvious simple problem or you are going to cause some real damage that will be difficult to diagnose.
And if you ever jump a bike from an automobile, make sure the car is off - the alternator output of a running car will fry the electronics on just about any bike.
Lastly, all these bikes are coldblooded and need some choke to start, that's normal operating procedure, especially if it's cold outside. There seems to be some macho thing of trying to start the bike without the choke and that's wrong, that's not how it's designed, the choke is an enricher circuit and is supposed to be used when starting a cold engine.

Thanks for the reply, it seems like you know what you are talking about just like many people here. When you say it must be charged for 6 hours you mean using like a "battery tender".

How do I know which one is the right one? Should I buy the one I found on Amazon, looking at that table pick one that says 1.25A?