are you sure you're adequately charging? Take your battery to the bike shop (or battery shop) and get it load tested. That's usually free. If the battery's good, then your problem exists somewhere within the bike, which is pretty common because 650s tend to have charging issues.
Deep breaths. In, out.
Electrics are tricky, but you can do this. I trust you've already cleaned your connections and packed them in dielectric grease. If not, that's a good rainy day project in the garage, just sit down with a beer (or two, or three), a clean cloth and some brasso. Clean up those bullet connections so they're good and smooth. The smoother they are, the greater surface area will connect with the female connectors. I used 1500 sandpaper to clean the female connector slots, too. Obviously, inspect things while you're going through them to make sure you don't have obvious shorts, etc. Once you're done with that, a good, quick check of your charging output is to take your multimeter, switch it to DC volts, start the bike, and put the appropriate gator clips on the appropriate battery posts. (alternative- if you have a battery tender, get the little pigtail wires that connect to the battery, then just stick your needle probes in the appropriate holes of the connector, that way you can leave your seat on after awhile) Once the bike is running, have a friend or your third hand rev the engine and hold it at around 3k rpms. Your charging should be close to 13v. around 5k rpms you should top out at 13.8 or so.
For a more thorough guide, go
here.
Report back with your findings and we'll try to help the best we can.
When you get frustrated, don't be afraid to step back and take a break. You'll thank yourself.
