You really ought to assume that any RC aircraft might fall out of the sky at any moment and should never fly anywhere where any kind of failure could lead to it falling onto people - and failure includes pilot error. It's not just this particular issue but electronics can and do fail at any time, props can physically fail, motors can die on you.
Sorry to get all preachy this early in the morning but it's slightly worrying to hear that people don't have confidence flying over crowded areas because of this battery error issue. Anything can (and eventually will) happen, fly accordingly.
Sorry to get all preachy this early in the morning but it's slightly worrying to hear that people don't have confidence flying over crowded areas because of this battery error issue. Anything can (and eventually will) happen, fly accordingly.