I'll keep you posted on the battery, but so far it is good. It's mainly going to stay in my wallet and be used as a backup battery though. Just for S&Gs, I'll give this battery an extended run tomorrow to sere how the battery life compares, but out should be just as good if my quick run is anything to go off of.
About the trouble, I'm not going through any trouble. I just wanted to see if it charged my batteries to 100, and out did. I'm going to continue to use my phone to charge my secondary battery. About the expense, it was like $10. Also, I didn't do it for the extra 5%. I ran into the following situation multiple times with my blackberry, the nexus will NOT be different, especially since the battery is slightly worse.
It's a long day, you burn through your primary battery completely, you put in your second battery and burn through most of it. Day's now over, you want to go to bed, but you can only charge your battery with your phone, looks like you only get 1 battery until you can find a time to swap them. Now comes the aid of the second charger, you can toss three secondary one in there, toss the primary battery I'm your phone and call it a night. Might not need it ALL the time, but it's a great help when I do need it.