I have gotten to the point of packing all of it in a Rubbermaid tote. Pre 911 I locked the ends now just lock 1 end and zip tie the other. I have had the tie cut 1 time in 4 flights, some flights I have not even bothered with either. I see the inspection notices but never any misplaced items or issues. I have heard the horror stories though of shock oils etc thrown out.
FYI they get a touch nervous when the batts go through the scanners as they are so dense with wires coming from them in some cases.