Talk about a self-explanatory title.
Samsung has quietly begun including the extended li-ion battery as a standard BlackJack accessory. Previously priced at about $40, the 1800 mAh battery is rated at up to 4.5 hours of talk time and about 16 days in standby. The standard battery (1200 mAh), by contrast, lasts for up to 3.5 chatting hours and 11 days of wondering what you did for everyone to lose your number.[HowardForums via CrunchGear]