Just last week we featured the battery-cover-busting ZeroLemon 7000mAh extended battery for the Galaxy S III. If that's not enough for you and your globe trotting, electricity eschewing lifestyle, the company also offers an even more expansive 9300mAh battery for the Samsung Galaxy Note II. In case you're wondering, yes, it's perfectly normal to imagine Also Sprach Zarathustra playing in the background right now. Amazon's got the battery for a mere $39.99 (US price) at the moment.
At 9300 milliamp hours, the extended battery is exactly three times as capacious as the standard battery. Naturally this requires an extended housing, provided by ZeroLemon in the form of a TPU plastic battery back (it's the slightly grippy, rubbery material that a lot of cases are made from). Thanks to the uniform design of the Galaxy Note II, the battery is compatible with the international model, as well as regional versions for AT&T, Verizon, Sprint, T-Mobile, and anything else you'd like to name.
The back makes the phone about twice its normal size, though some nifty bevels and cutout sections for the camera, flash, and S-Pen stylus should mean that there's no significant interruption to basic functions. ZeroLemon lists white and titanium grey versions of the battery, but both are currently unavailable on Amazon - not that anyone in the market for this thing is overly concerned with looks. The 9300mAh battery comes with a 6-month warranty, and Amazon Prime members can take advantage of free two-day shipping.