Boeing 787 Dreamliner Battery Problems

Boeing's 787 Dreamliner problems resurfaced in Japan.  Until the battery issues are fully resolved or old-style batteries are used, I will not be booking on this technological marvel of a flying time bomb.  It's not worth the excitement risk of an in-flight fire.

Dreamliner battery overheats:

A Japan Airlines 787 Dreamliner remains grounded at the Narita airport in Tokyo a day after white smoke was seen billowing out of a battery compartment. And Boeing has confirmed that one of the lithium-ion battery cells onboard overheated while the plane was parked on the tarmac.
The news of the battery failure comes just over a year after another 787, also owned by Japan Airlines, parked at the Boston Logan airport suffered a similar battery overheating issue that eventually caused the grounding of all 50 Dreamliners for more than three months as Boeing fought to find a fix.

Did maintenance or airport mains power contribute to the problem?

This latest incident took place while the 787 was undergoing maintenance ...