Further to my posts at #2158 & 2159, apparently there has been another battery failure since the 787 was re-certificated with improved batteries in a fire proof box. Details at
http://www.mlit.go.jp/common/001064275.pdf .
@ozaub, as far as I can see, the report you linked to refers to an event at Narita on 14 Jan 2014, thus before the redesign. Sorry if I've got that wrong.