BR50 Mobile Phone Battery Pack for V31 Compatible models:V3 V3i U6 MS500 2. Nominal Capacity:750mah 3.Nominal Voltage: 3.7V 4Guarantee time: 1 year 5Brand: shuao jiao niu 6Working temp: -10--+50 degree Centigrade; 7Weight: 28g 8Limited charge voltage: 4.2V 9Cycle life: 600 times 10Condition: New 11 Battery charging time: approx 5 hours. 12 Double IC offer over-discharging, over-charging, over-current and short-circuit protection, moresafeguard for using. 13Gilded and flexible connecter, better conductive properties, not easy to rust. 14Safety and stable: Hi-tech lithium battery, undergoes drop test, smash test and acupuncture test to ensure no fire and explosion in breaking. 15.QC: Before fixing, we check each PCB test it whether can get through and whether the IC is wroking. We can check cell the capacity whether can reach the capacity which the customer demand. After ficxing, we test each piece of the battery by synthesis instrument. High capacity, long standby time, long talking time. For more information about our products, please free to contact us!