This is a rechargeable Essential 3.85V 4.4V 1500mAh 5.77WH Quartz1 Battery . High quality and long lifetime, this Quartz1 battery lets you work seamlessly when you are on the move for business trips or vacations. All our Li-ion replacement batteries for Essential Quartz1 Cell Phone have been tested and proven to match and/or exceed original battery performance […]