Hey guys I'm having some trouble with my bike. 2001 cbr600 f4i with 20k miles

my bike sometimes won't start because the battery will not recharge. I have replaced the battery ,stator and voltage regulator. I'm not sure what else could be replaced
After i charge the battery sometimes i can ride for a week without any issues but then other times Ill charge it and after a day its dead again and wont start. Im not sure if something is draining my battery or if its not recharging.
The only code Im getting is the Fi light will come on and stay on when im riding.

any help is much appreciated

 

Get yourself a $10 meter and test things - then you will know if the battery is good, if the charging circuit works, and if you have a drain.

Don't ignore the fact that batteries can be faulty from the very beginning.

 

multimeter should b reading 14 or so once bike is revved a 4000 if charging system is working-my new used bike had the same issue once I once to tow it i checked the rectifier 1st cause i saw it was replaced-pulled the wiring out and the plug wasnt even pushed to lock but one of the 3 yellow wires wasn't pushed up into plug all the way-I pushed it in and it worked for 6 months then the whole plug melted the other night 45 minutes away from home-righed it up and made it home-now my new rectifier isn't the same wiring
Also when my rectifier wasnt working on my way home my gas reserve would come on cause Fi is ypur fuel injection but prolly on cause lack of juice

 

Is there a question in there somewhere? :-)