Nissin Power Pack PS 8 is an external high power booster for professional electronic flash. A variety of power supply cables are provided for Nissin flash or other brands. High speed charging and high power features ultimate the joyful of shooting experience to professional photographers and never miss the precious moments. Features Compact? Lightweight new! The core boosting circuit of Nissin Power Pack PS 8 has been redesigned to reduce the heat, compare with previous model, it now uses a high-strength plastic instead of a metal housing for the body. Because of this, the size is now more compact while maintaining the high-performance at the same time. (*1) In Addition, the belt buckles and shoulder strap are including into the packing for convenient use at any time. Quick-loading battery cartridge new! The Nissin Power Pack PS 8 has a new exclusive battery cartridge design. In addition to greatly increasing the battery capacity, the new battery design helps to decrease the overall weight. Another feature is the quick-loading battery cartridge design. It is the first time Nissin has introduced it on the external power pack. The efficiency of the new Nissin PS 8 is a great advantage for the working professional by significantly increasing the bumber of flashes per charge over the previous model. Battery level indication LED new! The new LED indication lamp located at the top of the body turns green after being fully charged. When the battery level is less than or equal to 30%, it turns from green to red and the LED beings blinking red, this indicates that the battery is nearly discharged. Please replace a new battery as soon as possible. USB socket new! With the increasing popularity of smartphones and tablet devices, photographers often have to carry back-up power stations for these devices. The intimate design of Nissin Power Pack PS 8, provides a USB charging socket which supports DC 5V 2A output. It can be a fast charging device for Image data transfer or others like smartphones and tablet devices in case of any emergency. (*2) High Speed charging Nissin Power Pack PS 8 provides high speed charging, approximately 0.7 seconds to recharge MG8000/ Di866 / Di866 Mark II flash and MF18 Marco ring flash. Economic The battery life of 1 Ni-MH battery cluster -7.2V/ 3,300 can provide 550 times full power output, and Charge Discharge about 500 cycles. Maximize the utilization Power Pack PS 8 provides 2 power sockets. Users are able to work with 2 flashes at the same time. A variety of power supply cables are provided for different camera brands.