Batteries for video light provided searched high power density. Price-performance ratio is okay. A charged battery pack to the charger supplied: 24h Charging time! A battery charger Original Sony loaded: 4h! The supplied battery charger may have "more power", because for the 6600 mAh capacity is 24 a very long time to load. Therefore only 4 stars. Battery use is ok Ordering, delivery, payment all super.