Originally Posted by RustyG
Take your battery to a local auto parts store and have them load check it. They will do it for free.
Since you mentioned that your buddy has a multi meter. You can test the health of your battery yourself.
If your battery is healthy it will hold its voltage for 30 seconds to a minute with key ON (Head light on, fuel pump primed). If the battery is a brick, the voltage will begin to drop quickly.
My guess is that if you are riding the bike day after day with the bike not sitting on a trickle charger in between you are probably OK for now.
I have had batteries discharge on me a number of times (European sport bikes like to eat batteries). Typically they do not hold voltage period. I have charged them up and watched the voltage drop quickly while not connected to anything.