I got a Extendted Battery that claims to have 3500 mAh. The Battery Monitor Widget Pro App shows it at 1500 mah. It seams to change and discharge very quicky. But the original Samsung battery claims (on the back of the battery) to be 1650 mAh. But the same app reads it also at 1500 mAh. I also tried a 3rd battery (1800 mAh - according to the back of that battery) and the app still shows 1500 mAh. Is there another app that will give me an acurate reading of the capacity of the SGS II and the battery currenly being used?