Fourstarr Deals 2 X 1850mAh is fantastic as a short road trip battery. It's bigger than I want to carry when flying but is perfect for charging. Right now fourstarr deals has their Fourstarr Deals 2 X 1850mAh Li-ion Replacement Battery + USB Wall Charger for Samsung T-mobile Galaxy S2 Samsung T989, AT&T Galaxy S2 II Skyrocket I727, Verizon Galaxy Nexus Samsung I515, Telus Galaxy S2 II X Samsung T989D, Sprint Galaxy Nexus L700, (Not Compatible With Galaxy Nexus I9250 and Galaxy S2 I9100） for cheap price. You'll just need to visit the site.
Compatible Models: - Samsung Galaxy S2 T989(T-Mobile) - Samsung Galaxy Nexus SCH-I515(Verizon) - Samsung Galaxy Nexus SPH-L700(Sprint) - Samsung Galaxy S2 Skyrocket SGH-I727(AT&T) - Samsung Galaxy S2 X T989D(Telus) Note: Not Compatible With Samsung Galaxy Nexus I9250 / Google Galaxy Nexus / Galaxy S2 I9100 Samsung Galaxy S2 has many specific models. Please check your models before purchase. (AT&T Samsung Galaxy S(TM) II and AT&T Samsung Galaxy S (TM) II Skyrocket (TM) are different phones)