As an accessory to my Sony Cybershot DSC-RX100II I bought this set a month ago, where in addition to the price value (battery with battery case, charger BC-TRX, mini UBS and power cord for about 60, -. Euro), the " Travel Charger "deserves BC-TRX special attention, can be realized with this little device three operations: 1) you can the battery (eg NP-BX1) load in the device, in the camera, 2.) you can the battery into the charger (ie in multi-Travel Charger) and load 3.) can be your device (eg operate the camera) without the battery directly from the mains. Besides the possibility of other battery charging (acc. Instruction manual, but I can not check) also indicates the respective status of the battery, the device, even when the battery is being charged in the camera. Due to the additional battery, which is included with the kit, you can charge the battery pack in the BC-TRX then while you run to the other battery unit (eg photographing) can, you have the battery then photographed empty (goes with Lightning and Wi-Fi Bildübertrageng quite fast), can replace him against the just charged and recharge the depleted in the charging cradle, etc., then you can not get into the awkward situation of having no charged battery on hand. The charger is quite small (9 x 5 x 4 cm) and light (100 grams), so fits into any baggage and thus also makes the standard supplied battery charger of my camera, which is only suitable for charging the battery in the camera, superfluous. A completely successful thing this set.