My new SJ6 came with 900 mAh batteries. Are there mAh options? They have official SJcam labels. I started to order a separate charger and extra batteries but the SJCam website says 1000 mAh / 1050 mAh in separate places for the SJ6 with no mention of 900 mAh. The official SJ6 charger (with rounded corners for the battery slots) also looks different from the older models.