In this video, we'll be cutting the explosive battery. Hit the like and subscribe buttons, and let us know what kind of explosive you think this is in the comments. Also, don't try this at home kids, we're what you'd call "professionals".
There's some discussion of the mechanics of the modifications in this TEMPCO story, though how the information was ascertained isn't clear:
[S]enior Lebanese source said the devices had been modified by Israel's spy service "at the production level."
"The Mossad injected a board inside of the device that has explosive material that receives a code. It's very hard to detect it through any means. Even with any device or scanner," the source said.
<https://en.tempo.co/read/1917697/israel-planted-explosives-i...>
Presumably not by like-and-subscribe seeking YouTubers, however.
Edit: World Service broadcast, analysis note at ~52s: <https://www.bbc.co.uk/sounds/play/w172zgf8tw4nqq5>