Note: If you want to use This Battery Pack for Yongnuo Flash, please select the Canon Verion.

The YN-568ex don't support Battery Pack. 

Compatible with following flash: 

• Nikon flash: SB-11, SB-20, SB-22, SB-24, SB-25, SB-26, SB-27, SB-28/28DX, SB-80DX, SD800
• Canon flash: 580EX II, 580EX, 550EX, MR-14EX, MT-24EX, Yongnuo Flash(not include YN-568Ex Canon/ Nikon and YN-568ex II Canon)
• Sony flash: HVL-F56AM

Quick Overview:

This external flash battery pack is an external power source for the Canon Speedlight. This Battery Pack can hold 8 AA-type batteries, ensuring a stable power supply for the speedlite, greatly increasing the number of flashes, and reducing recycling time.

Features:

• Protective Case: Protective soft case can be worn on belt or put in a bag; light and easy to carry. The one-way connector plug is designed to avoid mis-connections which can lead to flash unit damage.
• 1/4'' Thread Screw: Standard thread for tripod mount.
• Performance: The Pack reduces recycling time to less than half of a normal cycle and can give up to double the amount of flashes as the original ( a ). It is suitable for continuous flash use ( b ).
• Convenience: The Pack uses 8 AA batteries (same batteries as flash) and with different connecting plugs, supports most Canon flashes to greatly increase flash capacity. It's ideal for the professional.
• Product dimensions: 69mm(w)x158mm(h)x25mm(d) 
• Net weight: 170g
• Operating Temperature range: 0oC-40oC

Package Includes:

• 1 x External Flash Battery Pack (batteries not included),
• 1 x padded protective case, 
• 1 x 1/4 inch screw adaptor & English and Chinese instructions.

Note:

• a, Depending on state of battery charge;
• b, Maximum of 15 consecutive shots without break or risk of overheating