Boeing has recently warned airlines about the danger of shipping batteries. Ventura Aerospace and its customer FedEx have known about the risks in transporting batteries for years. This is why FedEx chose to work with Ventura Aerospace and Ansul in developing an effective system to deal with the threat of energetic battery fires.

http://www.marketwatch.com/story/boeing-warns-about-bulk-shipments-of-batteries-2015-07-19

The Ventura Aerospace main deck fire suppression system used on FedEx MD-11 and 777F aircraft has been addressing this problem for nearly six years. See the results ...