Oh you guys... you only gave the poor girl half the story! Given that I'm a fun of little white girls, I'll help you out!


First off, the battery is obviously holding a charge. What you need to test is the regulator/rectifier, which is the issue 99/100 times. Watch out as mechanics will try and tell you to tear into the stator and blah blah blah. They want your money, and they don't know the F2!

It's common for them to go out, and they are STUPID easy to repair. They also result in exactly what you described. The regulator rectifier is a $120 part, and I'm pretty sure even a blind kid could install it.


To test yourself:
So, I'd actually only advise you to charge the battery halfway, the issue shows up better this way. Place the voltmeter on the battery. At idle, you should be seeing around 13 volts. As you raise from idle up to 3.5k rpm or so, you should be hitting 13.8 volts. If you aren't, the charging system is probably at fault, and the regulator rectifier is most likely your problem.


To replace:

Unbolt just the right side plastics. Then look at the yellow circle below:



Remove the plug. undo the two bolts. Plug the new one in, bolt it up. You're done.

 

Make sure the plug is not fried. If it is you will need a new plug. You can get the rectifier and the plug off ebay. Rectifer is cheaper than $120. You can also do a gsxr rectifier they work watt better than the stock honda unit

 

Uhhh... you can get a STOCK one for under $100-120, or sometimes a GSXR one for under $120... but still, why the hell would you replace a broken part with another part that's going to fail you?

$100-120 for a good aftermarket one is a standard price to expect.

 

Gsxr rectifer is a better unit. Oem honda r/r is a peice of ****

 

They go out too. Almost all OEM r/r's are ****, some are just less ****ty than others. Aftermarket is the only way to go.