Fast Shipping with every EXTRA DENSITY - GRADE A power cells that charge higher and slowly releases power with Smart Stream Technologyr Standby time: 18 days Straight Talk time: 11.5 hours Type: Lithium ion Length: 104 millimeters Width: 45 millimeters Thickness: 21 millim BRAND NEW NOKIA 5100/6100 Long Lasting BATTERY 4000MAH LI-ON W/VIB