BL-4D Mobile Accessory for N97 mini 1 Compatible models:N97 mini 2Guarantee time: 1 year 3Brand: OEM 4Working temp: -10--+50 degree Centigrade; 5Capacity:1000mah 6Double IC offer over-discharging, over-charging, over-current and short-circuit protection, more safeguard for using. 7Gilded and flexible connecter, better conductive properties, not easy to rust. 8Safety and stable: Hi-tech lithium battery, undergoes drop test, smash test and acupuncture test to ensure no fire and explosion in breaking. 9Weight: 30g 10High capacity, long standby time, long talking time. 11 Limited charge voltage: 4.2V 12 Cycle life:600 times 13 Condition: New 14 Battery charging time: approx 5 hours. For moreinformation about our battery, please free to contact us!