I'm going to reply in here again instead of making a new thread.
So being the absolute moron I am, the next day I left the key in the bike, AGAIN, because I was in a rush to run into work due to being late. Needless to say, it was dead when I came to start it. Had girlfriend come with cables, went through the pain in the ass jumping process, died once I dropped the tank. Did it again and had the GF keep the engine revved at 6k while I put it back together, grabbed it and kept RPMs up after about 6 mins of full rev, died on the main highway as soon as I had to pull the clutch in.
Anyways, I went and got a charger and put it on the slowest charge for 6 hours until it was at about 85%. Put it in, started fine, check engine light for about 10 seconds and then it went away, drove home fine. On the way to work today it died while I was waiting for a right turn. Started up again fine, died the next time I had to slow down to a stop in a turn lane. Started up again, died again. Made it to a parking spot, went to work.
I came out and rode around and rode home and it was fine. All of my connections are secure, I'm positive. Could it just be a freak occurrence (off topic, "occurrence" is spelled really weird) or should I be worried?
Now that I have a quality charger I'm not worried about needing to charge it, but you're right when you say that jumping it is a huge pain in the ass. I looked at that product (the Jr thing) you linked. Is it just a normal charger? Something where I could hook it up and have terminals outside the tank with a protective weather-proof cap or something that I can unscrew would be awesome so I can jump it or charge it without taking it apart - is that what that is, or am I misunderstanding the product? Also, keeping it on a charge in the bike is out of the question. I live in an apartment complex on the second floor, and my bike is at the end of the parking lot. Not only would I be worried about somebody messing with it, but the closest power outlet is like 100 feet away.
I was also looking into the jumpers that have a battery built in, the standalone units. Is that for jumping only or can it charge the battery too? It would be nice for my girlfriend to be able to bring one unit to me in this situation instead of me having to take apart the entire bike, take the battery out, put the bike back together in case it rains or something, and then going back at 4am once the battery is charged and repeating the process again to put it back in. Are those any good?