I have raised the issue of lithium battery safety before and, of course, got the usual retorts from the usual keyboard warriors.

Well, there was a serious fire on a new Boeing 787 (of Ethiopian Airlines, which was seriously damaged) parked at LHR last week which seems to have been caused by an unattended lithium manganese battery powering the ELT, the Emergency Locator Transmitter.

This, the initial report by the UK AAIB, might be worth reading if YOU use lithium batteries.

http://www.aaib.gov.uk/cms_resources...3%20ET-AOP.pdf

Take it for what its worth.

David Gladwin.