Hey, no fair! You guys with the good HK batteries didn't vote in the poll!

Geneven, do you remember who you bought your batteries from?

BTW the spare battery is for use while travelling outside the U.S. I plan to use the N810 to grab email at convenient hotspots, including in airports, and then, on long plane flights, read PDFs and check the plane's position. In hotel rooms, where AC plugs are not always conveniently located, I will use it for email, reading U.S. newspapers, and listening to NPR and the BBC. (The sound quality is better than my travel shortwave radio.)