grebllaw123d
Thanks for that link. Would be interesting to know whether this battery fire/explosion occurred under load, or under recharge. The details of when it took place, and the circumstances, are sketchy.
To this non-engineer, various questions arise. Was the APU running; and – if so – for how long, and had it started at the first attempt? Had there been any previous problems with the APU? Did the cleaners have to call for the mechanics, or were they already on board? Were the mechanics present to advise the firemen?
As for the system itself, does anyone know for certain if the APU battery is recharged from the aircraft’s main electrical system (effectively), or is there some kind of autonomous charging circuit? Is there enough space on that rack for a different kind of battery (e.g., NiCad) that would be man enough to replace this Li-ion one? And would the recharging system have to be changed?