My battery died out of nowhere. I jump started my bike and let it run for about 25minutes in the parked position. Then my bike won't turn back on. What does this mean? Did I not charge my battery long enough or is there something else wrong?
You did absolutely nothing by letting it idle for half an hour. That doesn't charge anything...it's actually a drain.
You need to actually ride the bike at cruising speeds for that long or put the battery on a charger.
He is right.......
Yup, revs are key to on-bike charging, give it a blast around for 40 - 60 mins, it should start ok after that.
If not you may have charging issues. I had a problem with the altenator on my Yammy it would keep things going OK but as soon as extra load was applied like lights or turn signals there was a tendancy to stall. If nothing like this is happening your battery simply needs a good charge. If you have or can borrow or buy a simple charger leave it on for 24hrs minimum and if there is a notable improvement you have cracked your problem.
I believe that the manual states that a proper charge occurs around 5K rpm... Can anyone verify this?
be sure to maintain the levels in your battery.
if it doesn't take a charge for a charger. buy a new one. walmart has um cheap .
I put a voltmeter across my battery leads a few months ago, and I had to have the bike rev at over 2500 RPM to get over 13 volts. (12.6v is a fully charged battery) Running the bike at idle will do little to aid the battery.
Best (most enjoyable) answer is to ride it for 30+ minutes. As said, the battery and charging system should be in good health, filled with water. The boring answer is to put it on a trickle charger -- something that provides measured recharge.
Now, tell us some history. Is this an old (5+ years) battery? Was it sitting for several months? Did it experience a heavy discharge recently?
Batteries usually don't fail just like that. There are usually warning signs; headlight dimming when at idle, sluggish turn-over before catching, etc. Batteries are not like diamonds -- they are not forever -- they wear out though use or neglect.