Remanufactured -no original battery for the Nokia N 97. The 3000 mAh unmeasurable due to lack of measurement technology. The battery has twice the thickness / ca. twice the weight of the original !! Can only be used with the enclosed domed -not original battery cover! However, the mobile phone is then produced -from thickness and weight considered a real "Brummer". The battery life is significantly longer than the standard battery. On the day the phone for about 15 minutes. Phone / 30-45 min. Surf ALLEN saving settings of N 97 used in mobile well-very well supplied big city! The included "thick" cover fits well. Likewise, the battery, insert and remove problem-free. Battery life as I said, much longer, about twice as long in compliance with all charge and discharge cycles. In approximately !! Depends sure the respective calling habits from. (Not just covered with a stopwatch!). Am satisfied. From price and performance considered a strong buy recommendation.