Sorry, but its either exchange for another or wait like the rest of us, well you's (I got rid of my GNex) for a software update that may fix the problem. As far as the extended battery, if its just Verizon's/Samsungs then only expect another 2hrs of life from that. You can root and ROM but i was unable to find one that would fix my signal/battery problems, so I ditched the phone.
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