So much has been posted on this and other VFR sites re: electrical charging system woes, it is worth researching and reading the relevant posts. I don't think it's a good idea to simply replace parts (stator, r/r, battery) because often it's the wire connectors or the size of the wires that is the problem. For example Honda issued a recall of all 6th gen. VFR's to replace the wiring harness with an upgraded version ( allegedly has larger size wires in the charging circut).
What you need to do is: 1. verify that the battery you're currently using is good (have it tested by a reliable m.c. shop). 2. get a digital volt/ohm meter and verify that the voltage across the batt. terminals is >13.0 v. before you turn on the key. 3. start engine and verify that you're getting more volts with the engine running than you had before you started the engine.
4. rev engine to 5K rpm's and verify that voltage is at least 13.5v. but not over 14.5 v.
If all of these measurements aren't good, then you have to find out where the problem lies. Since you have already eliminated the battery in step 1, that leaves the R/R , the alternator, or the wiring and/or connectors. If the voltage rises over 15v. when you rev the engine then the R/R is most likely defective(but at least you know the alternator is o.k.).
If the voltage rises slightly with the engine running check the wiring and asso. connectors. You can also bare the red wire(s) coming out of the R/R and jump directly to the (+) terminal on the battery. If the voltage increases to within specs. with this set-up, then make it a permanent fix and your problems will be over.
If you can get a manual for your bike this will be a great help as it will show how to test the stator, R/R, and so forth. If you're going to keep the bike and plan on doing the work yourself this and a digital volt/ohm meter are essential. Good luck !