as far as I am informed, the A/c Batteries installed in the rear bay of B787, is overheating in service and thus causing, in worst case an Explosion. Boeing is working on isolation of the Battery compartment and directng the overheated gases out of cabin. Even if BAC is sucessful in finding a solution, a modification of that scale will require allest 90 days for implementation. Until this Mod carried out, the B787 is only allowed to c/out test flights under FAA directivess.
Initially, EADS planned to utilize the same batteries on A350. After the disaster with B787 Bateries, EADS is now looking for another solution I guess.
Hope I aws able to give some clue on the B787 Problem with the battery. My sugession is to overlook the problem of interaction between the Lithium Ion Battery and the Charger.
Overheat and resulting explosion of an A/C Battery, irrespective of Type or OEM, can also be caused by ay an installed Battery Charging Current Limiter as installed (BCCL) on some EADS Aircrafts or by an Aircraft Battery Charger (ABC) as intalled on other Manufacturers Planes. If the Battery is not adeqately protected against a Malfunctionaing of either BCCL/ABC, the installed Battery could cause considerable damabe. The Problem as I understand, was already detected but taken for serious enaugh. Hope, that the Aircraft Manufacturer involved will take proper action to avoid damage to the Aircrafts and the Passengers as well as our operating crew.